Renzora Engine

A 3D and 2D game engine and visual editor built on Bevy 0.20. It's fully compatible with the Bevy plugin ecosystem and is itself modular: every system is a plugin you can add, remove, or replace. Use it as a standalone engine to build games out of the box, or treat it as a customizable foundation you can modify into your own bespoke engine.

Warning: Early alpha. Expect bugs, incomplete features, and breaking changes between versions.

Features

Area	Features
Editor	Dockable panels with tabs, split panes and floating windows · up to four viewports · hierarchy, inspector, asset browser and console · translate, rotate and scale gizmos · infinite grid · camera presets · undo and redo · autosave · command palette · rebindable shortcuts · themes and fonts · built-in code editor · Play in its own process with live link · guided tutorial · UI scale and DPI support · runs on the web
Rendering	Physically based materials (clearcoat, anisotropy, transmission, parallax) · node material editor generating WESL · shader editor · Solari ray-traced global illumination with its own denoiser and ray-traced glass · DLSS upscaling and ray reconstruction · .rvg virtual geometry · Gaussian splatting · point, spot, directional and rectangular area lights · soft shadows, contact shadows, and cascade and bias controls · environment maps, skyboxes, light probes and parallax-corrected reflection probes · planar reflections · physical atmosphere · volumetric clouds · volumetric and distance fog · SSAO · SSR · bloom · auto exposure · depth of field · motion blur · tonemapping · MSAA, FXAA, SMAA, TAA and sharpening · order-independent transparency · forward decals · around 30 shader post effects (color grading, chromatic aberration, vignette, film grain, outline, CRT, toon and more) · Low, Medium and High quality tiers · mesh LOD with crossfade · texture streaming · GPU device-loss recovery
World building	Terrain sculpting and painting · foliage painting · spectral FFT ocean water · wind sway · tilemaps with composite objects and randomised painting · mesh modelling tools · shape library · level presets
2D	Sprites · sprite animation clips · dedicated 2D view · 2D lighting · 2D physics with Y-sorting
Animation	Animator with blend graphs, masks, transitions and events · retargeting · root motion · property animation with per-key easing · morph targets · facial animation · rigging tools · inverse kinematics · FBX animation import
Physics and simulation	Pluggable physics backends (Avian 3D and 2D bundled) · ragdolls · cloth · hair strands · parkour traversal and locomotion · navmesh pathfinding · GPU particles with an effect editor and effect library
Scripting	Rust scripts compiled as native plugins with full &mut World access, recompiled on save · pluggable language backends from the marketplace, several per project · hooks for ready, update, fixed-timestep update, UI, drawing, RPC, animation events, HTTP and player join/leave · rebindable input action map for keyboard, mouse and multiple gamepads · touch input with taps, pinch and twist · save slots · APIs for physics, animation, IK, particles, parkour, ragdolls, navigation and game UI
Audio	Own audio backend · mixer with buses and effects · spatial audio with distance falloff · pluggable audio backends
UI	Ember UI toolkit for the editor and games · game UI editor with markup templates · gamepad navigation of game menus · rich text · font switching and weights · SVG images
Multiplayer (alpha)	Client and headless dedicated server from one binary (--server) · replication and RPC over UDP · network panel
XR	Games in a VR headset over OpenXR (Quest Link, SteamVR) with a desktop mirror · headset editing mode (cargo renzora xr)
Plugins	Every engine system is a removable plugin · native plugins ship as source and compile on install · bundled plugins compiled into the binary · custom panels, inspectors, material nodes, post effects, and audio, physics, network and script backends · localization
Assets and scenes	BSN scene files · prefabs · scene thumbnails · glTF, FBX, OBJ, STL and PLY import with GLB compaction · hot reload · .rpak archives
Exporting	One binary is both editor and game · lean exports without unused features · Windows, Linux, macOS, Android, iOS and web, cross-compiled from one machine · built-in updater
Marketplace	Browse and install plugins, scripts and assets in the editor · publish from the Publish panel · creator credits

Planned

This list changes as work lands. See RELEASE_NOTES.md for what each nightly actually contains.

Feature	Status
Accessibility (screen readers) for game UI	Next up
IME text entry for Chinese, Japanese and Korean input	Next up
GPU occlusion culling, clustered decals, light cookies and irradiance volumes	Next up
Multiplayer: client prediction, secure handshake, avatar spawning, more transports	In progress
Facial rigging and posing	In progress
Code editor: minimap, code folding and undo history	In progress
Shared environment and lighting across multiple viewports	In progress
Unified world environment component	In progress
Translating the remaining editor text	In progress
Cinematic sequencer for cutscenes	Later
Behavior trees and AI perception	Later
Crowd avoidance for navmesh agents	Later
Camera rigs with shake, blending and rails	Later
Spline mesh tools for roads, pipes and fences	Later
Vertex and mesh painting	Later
Vehicle physics	Later
Data tables	Later
Lightmap baking	Later
Level streaming for large worlds	Later
In-editor profiler	Later
HDR display output and video capture	Later
Sprite rendering moving to SpriteMesh	Bevy 0.21 port
Ambient lights folding into environment-map lights	Bevy 0.21 port
Assets becoming entities	Bevy 0.21 port
Upstream .bsn file format and entity inspector	Bevy 0.21 port

Getting Started

Prerequisites: Rust.

git clone https://github.com/renzora/engine.git
cd engine
cargo renzora             # build, stage dist/, and launch the editor

That's the whole setup. cargo renzora builds the workspace natively, stages a complete engine into dist/<platform>/, and launches the editor from it. The first build is slow; every one after that is incremental.

On Linux you also need the usual graphics/audio dev headers:

sudo apt install pkg-config libx11-dev libxcursor-dev libxrandr-dev libxi-dev \
  libwayland-dev libxkbcommon-dev libasound2-dev libudev-dev

Build Commands

Command	What it does
cargo renzora	Build, stage dist/<platform>/, and launch the editor.
cargo renzora dist	Build and stage without launching.
cargo renzora profile	Profiling build with Tracy instrumentation compiled in.
cargo renzora sync	Regenerate the plugin wiring from the renzora::add! declarations.
cargo renzora remove <crate>	Delete a plugin crate and every reference to it.

Building the editor always builds the runtime too. The runtime doubles as a dedicated server: run it with --server.

Iterate with cargo check --profile dist and cargo clippy --profile dist; run tests with cargo test --profile dist -p <crate>. Always pass --profile dist. A bare cargo command builds a second full set of artefacts under target/debug/, and this workspace is far too large for two of them.

Shipping a game for a platform you're not sitting at (a macOS, Android, or web build from a Windows box) is part of the editor's export system, covered in the docs.

Documentation

Full documentation (getting started, scripting, UI, plugins, exporting, and more) lives on the website:

renzora.com/docs

Supported Platforms

Platform	Devices
Windows x64	Desktop, PCVR (SteamVR, Oculus Link)
Linux x64	Desktop, Steam Deck
macOS	Intel + Apple Silicon
Web (WASM)	Chrome 113+, Edge 113+, Firefox Nightly
Android ARM64	Phones, tablets, Meta Quest, Pico, HTC Vive Focus
iOS	iPhone, iPad
Apple TV	Apple TV 4K, Apple TV HD

Supported File Formats

Format	Type
.glb / .gltf / .fbx / .obj / .stl / .ply	3D models
.rvg	Virtual geometry models
.bsn / .ron	Scene files (.ron is the legacy format)
.rs / .lua	Scripts (Lua through a marketplace language plugin)
.material	Material graphs
.wesl / .wgsl	Shaders and post effects (.wgsl in the legacy dialect is translated)
.anim	Animation clips
.vfx / .particle	Particle effects (.particle is the legacy format)
.png / .jpg / .hdr / .exr / .svg	Textures and images
.rmip	Streamed, compressed textures
.ogg / .mp3 / .wav / .flac	Audio (native only)
.rpak	Compressed asset archives

License

Dual-licensed under MIT or Apache 2.0.

• MIT License
• Apache License 2.0
• AI Policy