stable-retro 0.9.8

No project description provided

A fork of gym-retro ('lets you turn classic video games into Gymnasium environments for reinforcement learning') with additional games, emulators and supported platforms. Since gym-retro is in maintenance now and doesn't accept new games, platforms or bug fixes, you can instead submit PRs with new games or features here in stable-retro.

• Supported emulators
• Supported games/envs

Emulated Systems

System	Linux	Windows	Apple
Atari 2600	✓	✓	✓
NES	✓	✓	✓
SNES	✓	✓	✓
Nintendo 64	✓†	✓†	—
Nintendo DS	✓	✓	✓
Gameboy/Color	✓	✓	✓*
Gameboy Advance	✓	✓	✓
Sega Genesis	✓	✓	✓
Sega Master System	✓	✓	✓
Sega CD	✓	✓	✓
Sega 32X	✓	✓	✓
Sega Saturn	✓	✓	✓
Sega Dreamcast	✓‡	—	—
PC Engine	✓	✓	✓
Arcade Machines	✓	✓	—

Installation

pip3 install stable-retro

or if the above doesn't work for your plateform:

pip3 install git+https://github.com/Farama-Foundation/stable-retro.git

If you plan to integrate new ROMs, states or emulator cores or plan to edit an existing env:

git clone https://github.com/Farama-Foundation/stable-retro.git
cd stable-retro
pip3 install -e .

Apple Silicon Installation (Tested on python3.10)

• NOTE: The Game Boy (gambatte) emulator is not supported on Apple Silicon

Build from source

1. pip install cmake wheel
2. brew install pkg-config lua@5.3 libzip qt@5 capnp
3. echo 'export PATH="/opt/homebrew/opt/qt@5/bin:$PATH"' >> ~/.zshrc
4. export SDKROOT=$(xcrun --sdk macosx --show-sdk-path)
5. pip install -e .

Build Integration UI

1. build package from source
2. cmake . -DCMAKE_PREFIX_PATH=/usr/local/opt/qt -DBUILD_UI=ON -UPYLIB_DIRECTORY
3. make -j$(sysctl hw.ncpu | cut -d: -f2)
4. open "Gym Retro Integration.app"

Docker image for M1 Macs: https://github.com/arvganesh/stable-retro-docker

Example

'Nature CNN' model trained using PPO on Airstriker-Genesis env (rom already included in the repo)

Tested on Ubuntu 20.04 and Windows 11 WSL2 (Ubuntu 20.04 VM)

sudo apt-get update
sudo apt-get install python3 python3-pip git zlib1g-dev libopenmpi-dev ffmpeg

You need to install a stable baselines 3 version that supports gymnasium

pip3 install git+https://github.com/Farama-Foundation/stable-retro.git
pip3 install stable_baselines3[extra]

Start training:

cd retro/examples
python3 ppo.py --game='Airstriker-Genesis-v0'

More advanced examples: https://github.com/MatPoliquin/stable-retro-scripts

Tutorials

Windows WSL2 + Ubuntu 22.04 setup guide: https://www.youtube.com/watch?v=vPnJiUR21Og

Game Integration tool: https://www.youtube.com/playlist?list=PLmwlWbdWpZVvWqzOxu0jVBy-CaRpYha0t

How to run a custom version of RetroArch that supports overriding player input with models trained with stable-retro/stable-baselines: https://www.youtube.com/watch?v=hkOcxJvJVjk

Discord channel

Join here: https://discord.gg/dXuBSg3B4D

Supported specs:

Plateforms:

• Windows 10, 11 (via WSL2)
• macOS 10.13 (High Sierra), 10.14 (Mojave)
• Linux (manylinux1). Ubuntu 22.04 is recommended

CPU with SSE3 or better

Supported Pythons: 3.7 to 3.12

Documentation

Documentation is available at https://stable-retro.farama.org/ (work in progress)

See LICENSES.md for information on the licenses of the individual cores.

ROMs

Each game integration has files listing memory locations for in-game variables, reward functions based on those variables, episode end conditions, savestates at the beginning of levels and a file containing hashes of ROMs that work with these files.

Please note that ROMs are not included and you must obtain them yourself. Most ROM hashes are sourced from their respective No-Intro SHA-1 sums.

Run this script in the roms folder you want to import. If the checksum matches it will import them in the related game folder in stable-retro.

python3 -m retro.import .

The following non-commercial Sega Genesis ROM is included with Stable Retro for testing purposes:

• Airstriker by Electrokinesis

List of other included ROMs.

BIOS

Some plateforms like Sega Saturn and Dreamcast also needs to be provided a BIOS. List of BIOS names and checksums.

Contributing

See CONTRIBUTING.md

There is an effort to get this project to the Farama Foundation Project Standards. These development efforts are being coordinated in the stable-retro channel of the Farama Foundation's Discord. Click here for the invite

Citation

@misc{stable-retro,
  author = {Poliquin, Mathieu},
  title = {Stable Retro, a maintained fork of OpenAI's gym-retro},
  year = {2025},
  publisher = {GitHub},
  journal = {GitHub repository},
  howpublished = {\url{https://github.com/Farama-Foundation/stable-retro}},
}

Papers

List of papers mentioning stable-retro. If you want your paper to be added here please open a github issue.

• Exploration-Driven Generative Interactive Environments
• Gymnasium: A Standardized Interface for Reinforcement Learning Environments
• IPR-1: Interactive Physical Reasoner
• SAFE-SMART: Safety Analysis and Formal Evaluation using STL Metrics for Autonomous RoboTs