Early bird registration is open for the 2026 Cesium Developer Conference! Save your spot.

Cesium for Omniverse v0.28.0

Cesium for Unity Samples v1.23.0

CesiumJS 1.139.1

Cesium for Unreal

In February, we attended Geo Week in Denver and discussed interoperability and open standards for Gaussian splats in the RTC AECO Spotlight. This week we’re proud to host the 134th OGC Member Meeting—let us know if you’re in Philadelphia! Plus: two more weeks of early bird devcon registration. 

We made improvements across Cesium this month. To get notifications about our monthly releases, you can subscribe to the Cesium release roundup thread on our community forum.

CesiumJS 1.139 is now available. Highlights of the release include:

Added panorama support via new EquirectangularPanorama and CubeMapPanorama classes, along with GoogleStreetViewCubeMapPanoramaProvider for loading cube map faces from the Google Street View Static API and rendering them in a cube map panorama. #13153 

Added more depth testing options for billboards and labels. #12994 

Added support for more metadata types via property textures in custom shaders. #13135 

Modified Sandcastle application to use a hybrid text and semantic, embedding based search. #13090 

Fixed Gaussian splat race conditions in snapshot/sort updates. #13016 #12965 

Fixed flashing when rendering multiple Gaussian splat primitives. #12967 

Part of a 360-degree panorama image of the interior of Laon Cathedral, France, visualized in CesiumJS. Photo by David Iliff, licensed under CC BY-SA 3.0.

Cesium for Unreal v2.23.0 is now available. Highlights of this release include:

Added support for loading tilesets with the KHR_gaussian_splatting extension. 

Added support for styling with tileset statistics on UCesiumFeaturesMetadataComponent. 

Deprecated AddCamera, RemoveCamera, UpdateCamera, and GetCameras on ACesiumCameraManager. Instead, use the new AdditionalCameras array to directly add or remove cameras. 

Added UsePlayerCameras, UseEditorCameras, and UseSceneCapturesInLevel to ACesiumCameraManager to toggle the automatic detection of cameras in the level for tile selection. 

Added ACesiumCameraManager::SceneCaptures for more explicit control over which ASceneCapture2Ds are used for tile selection. 

Added DetectTransformChanges to UCesiumGlobeAnchorComponent to toggle whether the globe anchor should update itself after changes in its Actor's transform. 

Build now uses the tinyxml2 library from Unreal's SDK on Linux and Windows if it is available. This eliminates a source of conflicts with other plugins that also use tinyxml2. 

Removed Cesium3DTileset::getFeaturesMetadataDescription. This can be directly retrieved from its attached UCesiumFeaturesMetadataComponent instead. 

In addition to the above, this release updates cesium-native from v0.57.0 to v0.58.0. See the changelog for a complete list of changes in cesium-native. 

Check the Cesium for Unreal release and the Cesium for Unreal Samples release for the full list of updates.

Download the Cesium for Unreal plugin from Epic Marketplace

Hines Rowing Center in Conshohocken, PA, visualized in Cesium for Unreal using Gaussian splats produced by iTwin Reality Capture.

Cesium for Unity v1.23.0 is now available. Highlights of this release include:

Added CesiumGeoJsonDocumentRasterOverlay, allowing stylized GeoJSON to be rasterized and draped over terrain and other 3D Tiles. 

Added CesiumGeoJsonDocument to parse and manipulate GeoJSON documents in code. 

Added CesiumGeoJsonObject to access individual features, geometries, and collections within a GeoJSON document. 

Added CesiumVectorStyle, CesiumVectorLineStyle, CesiumVectorPolygonStyle, and CesiumVectorPolygonFillStyle structs for styling vector data. 

Check the Cesium for Unity changelog for the full list of updates, and follow our Cesium for Unity tutorials to get started. 

A footprint of a proposed design model projected onto Cesium World Terrain using CesiumGeoJsonDocumentRasterOverlay.

Cesium for Omniverse v0.27.0 is now available. Highlights of this release include:

Cesium for Omniverse now requires Kit 107.3 or above (Isaac Sim 5.1.0 or above). 

Peruse the changelog for the full list of updates, and get started with our Cesium for Omniverse tutorials. 

Download the Cesium for Omniverse extension

Download the Cesium for Omniverse samples

**Cesium ion SaaS**
- Coming this week: additional options for running photo reconstruction jobs. These will make it possible to tune your automated reality modeling pipelines to better meet your requirements. 

**Cesium ion Self-Hosted**
- Coming this week: new version of Cesium ion Self-Hosted that includes recent updates to the Cesium design and reality tilers. 

**3D Tiling Pipeline** 
- The Design and Reality Tilers are now packaged with the tilers and tools in the 3D Tiling Pipeline. Versions have been unified, and all tilers are now on v5.0.1. 
- Added `terrain-and-imagery-tiler`, which produces 3D Tiles 1.1 output. 
- Removed `quantizedmeshto3dtilesconverter`; it has been replaced by `terrain-and-imagery-tiler`. 
- Fixed an issue where invalid attributes could be generated when converting from OBJ to glTF.

    - **Design Tiler** 
      - Improved rendering of IFC elements by giving sub-assembly elements the bounding box of the full assembly. 
      - Added more graceful handling of IFC lines that don’t meet the IFC specification. 
      - Added support for parsing eastings, northings, and orthogonal height from IFC files. 
      - Fixed generation of IFC swept circular geometry for better shading and performance. 
      - Fixed issues processing B-splines in IFC files. 
      - Fixed issues processing some geometries with swept circles. 

    - **Reality Tiler** 

      - Fixed an issue where duplicate vertices in input models could lead to inefficient textures and larger tilesets than necessary. 
      - Fixed a regression where duplicate vertices in the input would be written to tiles, rather than being filtered out. 
      - Significantly reduced memory usage for models with spatially incoherent textures. 

    - **Buildings Tiler**
      - Fixed an issue where some images in a glTF file had an invalid format and/or incorrect mime type. 

Trailamo uses CesiumJS to bring open geospatial data to mountaineers so they can plan safer, more informed routes anywhere in the world with advanced 3D terrain analysis and layered datasets. 

BADASS Studios uses Cesium for Unreal to create a premium digital fan experience for the E1 Series. 

Creating an XR Connection to the E1 Series with Cesium for Unreal

The E1 Series is the world’s first all‑electric race boat championship, bringing together cutting‑edge engineering, global competition, and high-profile star power. With celebrity‑owned teams and events spanning iconic waterfronts from Jeddah to Monaco, the sport pairs high performance with high glamour. Its RaceBirds—ultralight carbon craft powered by a 150 kW electric motor and lifted by hydrofoils—slice across the water at speeds of up to 50 knots, showcasing the future of sustainable racing and raising awareness for marine conservation.

For such an innovative sport, it should be no surprise that E1 provides a premium digital fan experience, created by BADASS Studios using Cesium for Unreal.

BADASS uses Cesium for Unreal to build a digital replica of E1 race venues, which is used in live broadcasts. Courtesy BADASS Studios.

BADASS builds a precise digital replica of every E1 race venue in Unreal Engine to provide an accurate, large‑scale replica of the environment with event-specific markers, sponsorship markers, and more for enhanced fan experience. Courtesy BADASS.

BADASS Studios: Digital Fan Experience for E1

Building the scene with Cesium for Unreal

For each race, BADASS builds a precise digital replica of the venue in Unreal Engine, using Cesium for Unreal to bring in Google Photorealistic 3D Tiles, which provide an accurate, large‑scale replica of the environment. BADASS artists then add event-specific elements: waypoint markers, shoreline grandstands, and custom buildings along the route, as well as lighting and color adjustments for a vibrant look. They also place sponsorship overlays: a win-win that provides high visibility for sponsors without polluting the oceans and views with billboards or other debris.

Still image of an E1 Series broadcast in Monaco. Courtesy BADASS Studios.

“BADASS operate at the intersection of creativity and technology. Their team take complex data, live telemetry and, working within the constraints of live broadcast, turn them into compelling XR experiences. They are agile, solutions-focused and deeply collaborative and have quickly become an essential extension of E1's content and product function.”

- Laurence Boyd, Chief Content and Product Officer, E1

The digital replica in Unreal provides a critical resource for live broadcasts of the race. During events, BADASS receives updates from a live telemetry feed that captures boat position, lift, trim, throttle, RPMs, and more. Their platform sanitizes the data and maps it onto the digital replica so every animation, AR label, and camera angle is synchronized with what’s happening on the water. Cesium’s geospatial accuracy means AR overlays don’t rely on tracking the broadcast feed. When the environment is removed and replaced with live video, the overlays stay perfectly aligned, enabling broadcast‑quality XR even in chaotic conditions where drone restrictions, line of sight challenges, or hardware issues can disrupt traditional filming.

With all the resources available in the Unreal environment, broadcasters can provide viewers with a visually interesting and deeply informative video by cutting back and forth between a live camera feed of the race, the digital replica in Cesium for Unreal, and a hybrid AR view of the race with data on the RaceBirds’ telemetry.

BADASS provides AR overlays for broadcasts of races, like this race in Monaco. Courtesy BADASS. 

The Cesium replica of the race isn’t just for broadcasts. Fans who come to watch the E1 Series can also take part in the races themselves in a game simulator. Players pick a team and a RaceBird and try their hand at piloting through the course, using the same environment BADASS built in Cesium for Unreal to use in course explainers and live broadcasts of the race. For onsite attendees, these simulators fill downtime between races and deepen engagement. In the future, these environments will also be published as a game on Steam and other platforms, allowing fans to play at home.

“Cesium’s streaming and geospatial accuracy give us a single environment we can reuse across course explainers, AR broadcast graphics, and interactive experiences, which makes delivery faster and the output more consistent.”

BADASS Studios reuses the same Cesium for Unreal race venue for VR and AR broadcasts and for simulations. They bring their adaptable approach to multiple live events, as shown in this simulation of the FIA Extreme H World Cup in Qiddiya City, Saudi Arabia. Courtesy BADASS Studios. 

This multi-use approach—creating a single environment that can be reused in marketing, broadcasting, and games—is only possible because of Cesium’s geospatial accuracy and streaming efficiency. Such reusable content deployed in so many ways simplifies the process for E1, which can solve many needs with a single digital twin, and for BADASS, which maximizes the use of the assets it builds.

In addition to the E1 Series, BADASS Studios supports a number of events, including the FIA Extreme H World Cup, an off-road race of hydrogen powered SUVs, and FIM World Supercross Championship. With a scalable platform built on Cesium, they plan to expand into other sports and entertainment live events, giving viewers in any location an enhanced connection to real events.

To build a geospatially accurate environment you can deploy in numerous ways, try out Cesium for Unreal.

In January, we attended GeoBuiz in Denver and opened the call for presentations and early bird registration for the 2026 Cesium Developer Conference. Looking ahead, we’re thrilled to be a host of the 134th OGC Member meeting in Philadelphia in March. 

CesiumJS 1.138 is now available. Highlights of the release include:

Fixed jitter artifacts on Intel Arc GPUs. #12879 

Improved voxel memory usage by reworking Megatexture to use Texture3D. #12570 

Fixed multiple issues causing undefined pick results in 2D/CV scene modes. #13083 

Fixed label sizing for some fonts and characters. #9767 

Volumetric rendering with voxels in CesiumJS was optimized with WebGL2’s 3D Textures for reduced memory usage at runtime.

When adding a CesiumCartographicPolygon to the level via the Cesium panel, the polygon is now created in the current Editor view, rather than at the origin. 

Added ACesiumCartographicPolygon::SetPolygonPoints to shape a polygon spline from a list of positions in cartographic or Earth-Centered, Earth-Fixed coordinates. 

Re-enabled support for tileset water masks on macOS devices. 

In addition to the above, this release updates cesium-native from v0.56.0 to v0.57.0. See the changelog for a complete list of changes in cesium-native. 

Cesium for Unity v1.22.0 is now available. Highlights of this release include:

Fixed a bug that prevented CesiumGoogleMapTilesRasterOverlay from being added to a GameObject in more recent versions of Unity.  

Coming this week: The Design and Reality Tilers will now be packaged with the tilers and tools in the 3D Tiling Pipeline. Versions will be unified, and all tilers will be on v5.0.0. 

WorldLens uses Cesium for Unity to deliver high-performance, immersive VR experiences that stream global geospatial data to Meta Quest.

Blenheim Palace leveraged 3D Tiles created through the Cesium Design Tiler and Add-In for Autodesk Revit to create a digital twin in CesiumJS that has IoT integration to enable smart heritage conservation, predictive maintenance, and sustainability.

Blenheim Palace Performing Smart Conservation with Cesium

To modernize and synchronize operational-level planning, Sandtable uses CesiumJS, Cesium for Unity, and Cesium ion to combine traditional military planning documents and immersive geospatial context.

In December, the team was in Orlando for I/ITSEC and Exton for our quarterly refactor. Then came all the jolly action with the Cesium-powered NORAD Tracks Santa app. 

Today, we opened the call for presentations for the 2026 Cesium Developer Conference. Submit your talk ideas, and we look forward to seeing you in June! 

CesiumJS 1.137 is now available. Highlights of the release include:

Fixes for positioning in workflows that delete and recreate labels. 

Fixes for texture coordinates in large billboard collections.

CesiumJS rendering a large collection of billboards with high precision, using data from the iTwin Feature Service.

Cesium for Unreal v2.22.0 is now available. Note that this release removes support for Unreal Engine 5.4; Unreal Engine 5.5 or later is required.

Other highlights of this release include:

Replaced the "Auto Fill" button on UCesiumFeaturesMetadataComponent with "Add Properties". This allows metadata properties and feature ID sets to be selectively added to the component, rather than adding them all in bulk. 

Added EnableDoubleSidedCollisions to ACesium3DTileset to allow intersections and collisions with geometry to also work when hitting "back" faces. 

Added an optional glTF model post-processing stage after the tile loading step to modify their models before they are displayed. 

Added support for refreshing Cesium ion login tokens after they expire and the refresh token is still valid. 

Fixed a material generation bug on UCesiumFeaturesMetadataComponent where user-made connections to If nodes were not preserved. 

Fixed deprecation warnings when compiling with Unreal Engine 5.5+ by replacing deprecated GetInputsView() calls with FExpressionInputIterator. 

This release also updates cesium-native from v0.55.0 to v0.56.0. See the changelog for a complete list of changes in cesium-native. 

A list of metadata properties available in the New York region of Cesium OSM Buildings.

Cesium for Unity v1.21.0 is now available. Highlights of this release include:

Setting CesiumGeoreference.ellipsoid at runtime will now correctly update the Georeference and associated transforms. 

Fixed a bug that could cause Cesium3DTileset::Update to be called more than once per frame in the Editor. 

Further improved stability when Unity reloads the AppDomain, such as when editing scripts or entering Play mode. 

In addition to the above, this release updates cesium-native from v0.55.0 to v0.56.0. See the changelog for a complete list of changes in cesium-native. 

Cesium for Omniverse v0.26.0 is now available. Highlights of this release include:

Fixed loading KTX2 textures with mipmaps.

Reduced memory usage when processing IFC files. 

Added support for nested IFC properties. 

(experimental) Added support for geospatially locating IFC exports from Archicad. 

Fixed a stack-overflow issue when processing some IFC elements on Windows. 

If an IFC property has multiple data types, the data will be cast to the most general type. 

Fixed an issue where a CRS origin could be applied incorrectly if the origin was set from the command line and also found in a sidecar file. 

Virtual City Systems uses CesiumJS to power open source 3D urban planning tools like VC Map and VC Solar, enabling scalable, interactive city modeling and analysis for municipalities. 

Engineering design and consulting firm WSB is using Cesium-powered geospatial capabilities in Bentley Infrastructure Cloud Connect to ensure design flaws are caught early.   

In 2025, NORAD Tracks Santa turned 70. Cesium is proud to help track Santa each Christmas Eve since 2012. 

Last month we attended both FOSS4G NA and the LSAS Aerospace and Defense Workshop, where we presented and met with the community. And we’re currently at I/ITSEC! Come by to meet with our team and see demos curated specifically for the modeling, simulation, and training community.

We’ve also welcomed new team members, including Don McCurdy, creator of glTF Transform and glTF.report. We shared his recent conversation with Sean Lilley, our lead engineer behind 3D Tiles, discussing how we can advance 3D Tiles and glTF in an open ecosystem.

CesiumJS 1.136 is now available. Highlights of the release include:

Fixed depth testing bug with billboards and labels clipping through models #13012

Billboards using imageSubRegion now render as expected. #12585

Improved scaling of SVGs in billboards #13020

Fixed unexpected outline artifacts around billboards #13038

Added scene.pickAsync for non GPU blocking picking using WebGL2 #12983

Improves performance of terrain picks via new terrain picking quadtrees #8481

This month we made performance improvements in CesiumJS for terrain picking by using a quadtree acceleration structure.

Cesium for Unreal v2.21.1 is now available. Note that this is the last release of Cesium for Unreal that will support Unreal Engine v5.4. Future versions will require Unreal Engine v5.5+.

Fixed a bug that prevented UCesiumPrimitiveFeaturesBlueprintLibrary::GetPrimitiveFeatures from retrieving the features of instanced meshes.

In addition, this release updates cesium-native from v0.54.0 to v0.55.0. See the changelog for a complete list of changes in cesium-native.

Cesium for Unity v1.20.0 is now available. Importantly, this month we added a highly requested feature: experimental support for web builds!

Improved stability when Unity reloads the AppDomain, such as when editing scripts or entering Play mode.

Fixed incorrect association of the iOS libraries with the iOS platform, which could cause errors when packaging for other platforms.

Exceptions thrown by delegates implemented in native code are now correctly propagated back to the managed caller. Previously, this scenario could cause crashes and undefined behavior.

Delegate wrappers for native functions now use SafeHandle to ensure the native function will not be destroyed by the garbage collector while it is running.

Added Azure Maps 2D imagery assets as a Technology Preview.

Cesium ion now supports setting an asset's height for individual slides in Stories.

Check the changelogs for the full list of updates for Cesium ion SaaS and Cesium ion Self-Hosted.

To modernize defense planning and rehearsal, VRAI used Cesium for Unreal to build the Virtual All-Domain Environment (VADE), enabling users to deeply examine areas of interest before arriving. 

Forensic Rock uses Cesium for Unreal and Google Photorealistic 3D Tiles to rapidly reconstruct accident scenes with high-fidelity geospatial data for legal visualizations.

Forensic Rock Accelerates Accident Reconstruction with Google Photorealistic 3D Tiles

VADE uses Cesium to mirror operational reality. Courtesy VRAI. 

Virtual All-Domain Environment (VADE) uses Cesium to mirror operational reality. Courtesy VRAI.

This Is VADE

An immersive XR platform in the works since 2021, VADE began as a proof of concept between simulation data company VRAI and the Royal Air Force for comprehensive situational awareness and could scale across Defence. VRAI announced VADE’s full release at DSEI in fall 2025. 

Real-world 3D data and live collaboration in VADE enable a common operating picture (COP) for detailed planning and faster decisions. Add XR, and troops familiarize themselves with a location before deploying. VADE can be set for individuals or in multiplayer mode, accessed via desktop app or with headsets.  

The tool’s capabilities span domains: 

For drone intervisibility studies, users can draw routes, mark waypoints at each kilometer, and determine blind spots at specific locations and heights to ensure proper placement anywhere on the globe.  

With a volumetric tool for battlespace management and deconfliction, airspace coordination via VADE is accurate and intuitive.  

High-altitude parachute insertion simulations include trackback lines for descent, giving the distance to the drop zone throughout the line; users can view the line from the aircraft or the ground, with the surroundings they can expect to see.  

Because VADE allows users to customize for NATO standards, slopes turn red if they’re not sufficient for helicopter landing sites (HLS). 

Although VADE is not a targeting tool, users can examine the impacts of explosives. 

Restricted operating zone for UAS overwatch. Courtesy VRAI.

Intervisibility study to ensure proper placement. Courtesy VRAI.

Route planning, with directional arrows and optional kilometer markers. Courtesy VRAI.

Gun target line (GTL) tool. Courtesy VRAI.

GTL and impact of explosives. Courtesy VRAI.

VADE employs Cesium World Terrain and Bing Maps Aerial imagery with Cesium for Unreal to enable users to navigate to places that matter for their missions, manipulating the time of day and simulating weather conditions, with high-fidelity rendering. When users are online, they can pull in Google Photorealistic 3D Tiles for exercises in urban areas, and Vexcel data is a boon when VADE is used as part of an airgapped solution via Cesium ion Self-Hosted.  

The VADE library includes data via Cesium ion; 3D models of aircraft, tanks, and other vehicles; NATO map marking symbols for friendly forces and enemy capabilities; and user-specific sources, like their own imagery, photogrammetry, or GitHub repos. VADE connects to users’ private Cesium ion accounts for hosting, tiling, and streaming efficiently. Using geospecific data via Cesium saves VRAI engineers and their users days of work per location and obviates the need for hand modeling or geotypical data, improving situational awareness and decision speed and reducing the cognitive burden on those tasked with complex planning and rehearsal. 

“It’s a transformative way of planning for defense. We operate in multiple dimensions—why wouldn’t we plan in multiple dimensions?” said Ant Casson, former Squadron Commander in the Royal Air Force and VRAI’s business development lead for the UK and Europe. “The possibilities are endless for VADE, enabled by the powerful tools provided by Cesium for Unreal.”

The VADE library includes 3D models of aircraft, tanks, and other vehicles. Courtesy VRAI.

VADE is dual use: in addition to its defense value, the app’s live 3D COP enables better decisions with real data for emergency services, disaster relief, critical national infrastructure planning, large event planning, and agricultural monitoring.  

Learn to integrate 3D geospatial data when clarity, confidence, and speed matter most. 

VRAI Delivers Virtual All-Domain Environment with Cesium for Unreal 

When a court case following a serious automobile accident could benefit from a visualization of the incident, attorneys turn to Forensic Rock, a Philadelphia company that creates visualizations of accident scenes using tire marks, LiDAR scans, and other physical evidence. With Google Photorealistic 3D Tiles and Cesium for Unreal, Forensic Rock delivers immersive, accurate reconstructions with speed and precision.

Forensic Rock recreates accident scenes for court cases using Photorealistic 3D Tiles and Cesium for Unreal. Courtesy Forensic Rock.

Visualizing car accidents using Cesium for Unreal

Forensic Rock

In one urgent case, Forensic Rock animators were given only two weeks to reconstruct an accident. They completed their animation on time thanks to Cesium for Unreal.

Forensic Rock’s typical process is to complete a LiDAR scan of the site, then build the scene and add an animation of the circumstances of the accident. By using Cesium for Unreal, they were able to forgo the labor intensive scanning and modeling stage. Through Cesium ion, animators had instant access to curated global datasets, including Photorealistic 3D Tiles, which gave them the real-world terrain and building data from the exact crash location needed for the scene.

With Photorealistic 3D Tiles, Forensic Rock can focus on visualizations without losing time to scanning and modeling the environment. Courtesy Forensic Rock.

Using Photorealistic 3D Tiles from the exact location of the accident, as well as police report data about the vehicle’s speed and position, they plotted a point-to-point crash trajectory that clearly demonstrated the path of the accident. The result was a compelling, data-driven animation that attorneys could use in court.

“While the forensics business often presents stressful deadlines, the integration of Cesium into our pipeline ensures we are always prepared.” 

Because Cesium is built around open standards, animators have access to high-quality datasets like Photorealistic 3D Tiles to bridge the gap between raw data and visual storytelling—making their work not just technically impressive but also impactful in legal contexts. Sign up for a Cesium ion account to bring real-world datasets into your application.

In October, we introduced Google Maps 2D Tiles in Cesium ion and had a busy month with events: Intergeo, FOSS4G Japan, AUSA, YII, ArchiFuture, and the 133rd OGC Member Meeting. This week we’re at FOSS4G NA in Reston, Virginia—join us at our talks and stop by the Cesium table to chat with the team.  

The stunning mountains of Kauai, Hawaii, visualized with Cesium World Terrain and the Google Maps 2D Satellite asset from Cesium ion.

CesiumJS 1.135 is now available. Highlights of the release include:

Added experimental support for loading 3D Tiles as terrain, via Cesium3DTilesTerrainProvider. See the PR for limitations on the types of 3D Tiles that can be used. #12296 

Added support for EXT_mesh_primitive_edge_visibility glTF extension. #12765 

Improved performance of scene.drillPick (#12916), removing primitives (#3018) and terrain Quadtree handling of custom data. (#12907) 

Removed support for the KHR_spz_gaussian_splats_compression extension in favor of the latest 3D Gaussian splatting extensions for glTF, KHR_gaussian_splatting and KHR_gaussian_splatting_compression_spz_2. Please re-tile existing Gaussian splatting 3D Tiles. #12837 

This release contained a number of community contributions, including three from user Beilinson. If you’re interested in helping too, check out our contributors guide. 

Sandcastle has been updated at https://sandcastle.cesium.com!

glTF model demonstrating the EXT_mesh_primitive_edge_visibility extension in CesiumJS. Customization of edge colors will come in a future release.

Cesium for Unreal v2.21.0 is now available. Highlights of this release include:

Added ICesium3DTilesetLifecycleEventReceiver interface, allowing applications to receive callbacks when a material is instanced, when a tile changes visibility, when a tile is unloaded, etc. 

Fixed a bug where CesiumCreditSystem would not filter out empty credits, resulting in duplicate on-screen delimiters. 

Improved CesiumGeoJsonRasterOverlay’s support for polygons with holes and for datasets with geometry on both sides of the antimeridian. 

Infrared weather data across North America overlaid on satellite imagery from Microsoft Azure.

Cesium for Unity v1.19.0 is now available. Highlights of this release include:

Added CesiumGoogleMapTilesRasterOverlay to stream imagery from Google Maps. 

Added CesiumAzureMapsRasterOverlay to stream imagery from Microsoft Azure. 

Added assetOptions to CesiumIonRasterOverlay to pass JSON-string options to Cesium ion as it accesses an asset. 

Traffic in Philadelphia, PA, USA, visualized over a roadmap layer from Microsoft Azure alongside Cesium OSM Buildings.

Cesium ion now keeps track of which user created a story or uploaded an asset when that user is acting as a member of a Team account. 

Cesium ion now allows users to copy assets and stories between accounts to which they have access, such as from their individual Community account to a Team account. 

In Cesium Stories, added a feature to clip the terrain around a model. 

Added support for spherical harmonics when viewing Gaussian splat assets. 

Added support for tracking the creator of an asset and a story. 

Fixed an issue in reality tiler that could cause incorrect materials to be mapped to meshes when loading OBJ files. 

Fixed an issue where repositioning an asset would cause the re-archive process to fail. 

Fixed a bug with 3D Tiles imports from Microsoft Azure. 

Fixed an issue that could cause models with multiple sets of texture coordinates to be subdivided more than necessary. 

We added a feature to Cesium Stories to clip the terrain around a model.

In November 2025, we added a feature to Cesium Stories to clip the terrain around a model. 

Cesium Releases in March 2026

Creating an XR Connection to the E1 Series with Cesium for Unreal

Cesium Releases in February 2026

Cesium Releases in January 2026

Cesium Releases in December 2025

VRAI Delivers Virtual All-Domain Environment with Cesium for Unreal

Forensic Rock Accelerates Accident Reconstruction with Google Photorealistic 3D Tiles