Genesis World

Genesis World is a simulation platform for physical AI developments. It combines a unified multi-physics engine, a photo-realistic renderer (Nyx), and a cross-platform compiler (Quadrants) behind a Pythonic simulation interface. Genesis World is designed to scale from a single laptop kernel to datacenter-grade GPUs, while remaining easy to read, extend, and embed in research code.

It was previously named Genesis and started as an academic project since Dec 2024, and its development is now officially supported by Genesis AI.

For more technical details, refer to our blog post.

Table of Contents

1. What is Genesis World?
2. Catalogue
3. Quick Installation
4. Contribution
5. Support
6. License and Acknowledgments
7. Citation

What is Genesis World?

Genesis World occupies the four layers inside the dashed box. Above sits whatever you build (robotics environments, ML pipelines, data generation, agentic simulation); below sits whatever compute backend you have.

• Simulation Interface — the user-facing API: asset parsing (URDF, MJCF, OBJ, GLB, USD, …), entity accessors, controllers, sensors, parallel and heterogeneous environments, and a built-in GUI.
• Physics — a unified multi-physics engine integrating Rigid, FEM, MPM, Particle (PBD / SPH), uipc, an explicit coupler, and SAP, all sharing one scene and one state.
• Render — three rendering paths plug in as camera sensors: Nyx (our in-house renderer designed for robotics), Luisa (DSL ray tracer), and Pyrender (rasterizer).
• Compiler — Quadrants lowers Python kernel code to CUDA, AMD ROCm, Apple Metal, Vulkan, x86, and ARM64. It carries Genesis's autodiff, GPU graphs, and fastcache machinery.

Documentation

• Genesis World
• Quadrants
• Nyx

Catalogue

Three sections, mirroring the Genesis layers that ship runnable demos: Physics (solvers and multi-solver coupling), Rendering (in-repo camera setups plus the Nyx walkthroughs hosted in genesis-nyx), and Simulation Interface (sensors, GUI, controllers, parallel/heterogeneous envs, and tutorials). Most scripts run end-to-end after pip install -e ".[dev]"; demos that depend on optional backends (e.g. the IPC and Nyx examples) need the extras listed in Optional extras.

Physics

Rigid: franka cube	Rigid: collision tower	Rigid: contype
FEM: hard & soft constraint	MPM: tutorial	MPM: sand wheel
SPH: rigid	SPH: + MPM	PBD: liquid
PBD: cloth	Stable Fluid: smoke	IPC: robot cloth teleop
Coupler: cloth on rigid	Coupler: rigid + MPM	Coupler: cut dragon
Coupler: water wheel	Coupler: flush cubes	SAP: Franka grasp rigid cube
Rigid: contact patch

Rendering

Genesis exposes three rendering paths as camera sensors: built-in (Nyx / Luisa / Pyrender) and detailed Nyx walkthroughs hosted in genesis-nyx.

Follow entity	Animated camera	Nyx: hello
Nyx: attached camera	Nyx: PBR materials	Nyx: light types
Nyx: 3D Gaussian splat	Nyx: object picking	Nyx: multi-cam multi-env

Simulation Interface

Controlling a robot	GUI: ImGui joint control	Heterogeneous envs
Domain randomization	Sensor: depth camera	Sensor: IMU
Sensor: lidar	Sensor: tactile sandbox	Sensor: contact force
Sensor: surface distance	Sensor: temperature grid	GUI: debug drawing
GUI: mesh point picker	GUI: mouse interaction	Diff-IK controller
Batched IK	Drone	Advanced: worm

Quick Installation

Using pip

Install PyTorch first following the official instructions.

Then, install Genesis via PyPI:

pip install genesis-world  # Requires Python>=3.10,<3.14;

For the latest version to date, make sure that pip is up-to-date via pip install --upgrade pip, then run command:

pip install git+https://github.com/Genesis-Embodied-AI/genesis-world.git

Note that the package must still be updated manually to sync with main branch.

Users seeking to contribute are encouraged to install Genesis in editable mode. First, make sure that genesis-world has been uninstalled, then clone the repository and install locally:

git clone https://github.com/Genesis-Embodied-AI/genesis-world.git
cd genesis-world
pip install -e ".[dev]"

It is recommended to systematically execute pip install -e ".[dev]" after moving HEAD to make sure that all dependencies and entrypoints are up-to-date.

Optional extras

Quadrants is bundled with Genesis automatically; no extra install. The standalone wheel (pip install quadrants) is documented at Quadrants for users who want the compiler outside Genesis.

Using uv

uv is a fast Python package and project manager.

Install uv:

# On macOS and Linux
curl -LsSf https://astral.sh/uv/install.sh | sh

# On Windows
powershell -ExecutionPolicy ByPass -c "irm https://astral.sh/uv/install.ps1 | iex"

Quick start with uv:

git clone https://github.com/Genesis-Embodied-AI/genesis-world.git
cd genesis-world
uv sync

Then install PyTorch for your platform:

# NVIDIA GPU (CUDA 12.6 as an example)
uv pip install torch --index-url https://download.pytorch.org/whl/cu126

# CPU only (Linux/Windows)
uv pip install torch --index-url https://download.pytorch.org/whl/cpu

# Apple Silicon (Metal/MPS)
uv pip install torch

Run an example:

uv run examples/rigid/single_franka.py

Contributing to Genesis

The Genesis project is an open and collaborative effort. We welcome all forms of contributions from the community, including:

• Pull requests for new features or bug fixes.
• Bug reports through GitHub Issues.
• Suggestions to improve Genesis's usability.

Refer to our contribution guide for more details.

Support

• Report bugs or request features via GitHub Issues.
• Join discussions or ask questions on GitHub Discussions.

License and Acknowledgments

The Genesis source code is licensed under Apache 2.0.

Genesis's development has been made possible thanks to these open-source projects:

• Taichi: the original compiler that Quadrants forked from in June 2025. Kudos to the Taichi team for their technical support over the years.
• libuipc: IPC solver backend.
• FluidLab: Reference MPM solver implementation.
• SPH_Taichi: Reference SPH solver implementation.
• Ten Minute Physics and PBF3D: Reference PBD solver implementations.
• MuJoCo: Reference for rigid body dynamics.
• libccd: Reference for collision detection.
• PyRender: Rasterization-based renderer.
• LuisaCompute and LuisaRender: Ray-tracing DSL.
• Madrona and Madrona-mjx: Batch renderer backend

Citation

If you use Genesis in your research, please consider citing:

@article{
   genesis2026genesisworld,
   author = {Genesis AI Team},
   title = {The Role of Simulation in Scalable Robotics, Genesis World 1.0, and the Path Forward},
   journal = {Genesis AI Blog},
   month = {May},
   year = {2026},
   url = {https://www.genesis.ai/blog/the-role-of-simulation-in-scalable-robotics-genesis-world-10-and-the-path-forward},
}

@misc{
  Genesis,
  author = {Genesis Authors},
  title = {Genesis: A Generative and Universal Physics Engine for Robotics and Beyond},
  month = {December},
  year = {2024},
  url = {https://github.com/Genesis-Embodied-AI/genesis-world}
}