About

Balaur is a 2D & 3D node-based game engine in Rust. Deterministic tick, TOML scenes, Rune scripts that hot reload in milliseconds. Free, MIT.

Who​

Dragos Daian, appsinacup. Started Balaur.

• Godot Rapier Physics: Rapier's 2D and 3D physics in Godot. Where Balaur started.
• Gamend, an open source Elixir game server: auth, lobbies, leaderboards, payments, server hooks. Balaur's Gamend module talks to it.
• Godot Box2D, Godot SoftBody2D, Godot Whisper. More Godot extensions.

Sébastien Crozet, dimforge.

• Rapier: the physics under Balaur, 2D and 3D.
• Parry is the collision detection under Rapier.
• kiss3d: the renderer under Balaur, on wgpu.
• nalgebra, salva, bevy_rapier. The rest of dimforge.

Everything else the engine stands on: Built on.

Why​

• Godot Rapier Physics makes the physics server deterministic. The rest of the game is not. Balaur makes the whole tick deterministic.
• A bug fix in Godot waits on review and a release. Here it ships the same day.
• Longer: From Godot Rapier to Balaur.

Where it is​

• First commit August 2026. Version 0.1.0. Builds from source; no binary release yet.
• Compare says when to pick Godot, Bevy or Fyrox instead. Roadmap says what is missing.

How it is run​

• Principles: what the engine optimises for, and how the project is run.
• MIT, no CLA. Nothing is for sale: no fees, no revenue share, no paid tier.

The name​

Romanian for dragon, and Balaur bondoc, the Transylvanian dromaeosaur with two sickle claws on each foot. The mark is the claws. Files on Branding.

Contact​

Discord · Discussions · Issues · Community