For multiplayer games
Deterministic by default.
- A fixed 60 Hz tick.
- Record inputs and replay the whole session.
- HTTP, WebSockets and WebTransport.
Balaur for multiplayer →Determinism manual →Open examples/angrynerds →
For level design
Design in real time.
- Place, move and scale.
- View properties.
- Press play to start the game.
For programmers
Scripts reload instantly.
- Rune scripting with Rust syntax and async/await.
- Hot reload with breakpoint support.
- Plugins in Rust or C.
Balaur for game developers →Scripting →Plugins →Open examples/hello →
For animators
2D and 3D animation.
- Mesh skinning with bones and painted weights.
- Pose with two-bone IK and look-at.
- 3D rigs imported from glTF.
For artists
Lights, shadows and shaders.
- 2D lights and occluders.
- Materials in WESL.
- Post-processing, particles, tile maps, sprites and meshes.
Nodes and scenes
A tree of nodes with scripts attached, saved as TOML.
Scripting in Rune
Rust's syntax, instant reload, async/await, and a debugger in the editor.
Instant hot reload
Save a script and the new code is live in milliseconds.
Determinism, always on
Same inputs, same outputs on every platform.
2D and 3D physics
Rapier under both, stepped on a fixed 60 Hz tick.
Rendering
2D and 3D.
Animation and skeletons
Clips and tweens, 2D bones with skinned polygons, 3D rigs from glTF, two-bone IK.
The editor
Itself a Balaur project: scene tree, inspector, gizmos, timeline, rig tools, play-in-editor.
Networking
HTTP, WebSockets and WebTransport, with compression.
Every platform
Destkop: Windows, macOS and Linux.
Mobile: iOS, Android.
And Web.
Export
Bytecode, scenes and assets go into a single executable, one per platform.
Built with Rust
Written in Rust, reusing popular libraries: Rapier, wgpu, egui, rodio, Rune.
Free and open source, MIT, for Windows, macOS, Linux, iOS, Android and Web.