Open source PlayStation 1 games are an important part of the modern PS1 homebrew scene. By making their source code publicly available, developers allow others to study how their games work, learn programming techniques, contribute improvements, fix bugs, or even create entirely new projects based on existing code.
This page collects open source games developed specifically for the original PlayStation console. The projects featured here cover a wide range of genres, from simple arcade games and puzzle titles to more advanced platformers, 3D experiences, and technical showcases. Most of them are written in C using modern PlayStation SDKs such as PSn00bSDK, although some use alternative development tools and frameworks.
Whether you're a developer looking for practical programming examples, a contributor interested in improving existing projects, or simply a fan curious about how PlayStation homebrew games are made, this collection provides an easy way to discover some of the most notable open source releases for the system. Each entry includes links to the game's source code repository, download page, and additional information about its development.
The list is regularly updated as new projects are released or existing games become open source, making it a valuable resource for both players and PlayStation homebrew developers.
A collection of Open Source PS1 Games
Celeste Classic PSX (psn00bsdk)
Developer: wildmonkeydan
Genre: Platformer
Version: 1.1
Release Date: July 2023
Celeste Classic PSX (PSYQo)
Developer: Bonnie Games
Genre: Platformer
Version: 1.4
Release Date: February 2026
Doki Doki Literature Club
Developer: Soeiz
Genre: Visual Novel
Version: 0.4
Release Date: July 2025
Flappy Adventure X
Developers: Juanmv94
Genre: Platformer
Version: 1.0
Release Date: March 2021
FNAF PSX
Developer: Soeiz
Genre: Horror
Version: 1.4.0
Release Date: August 2023
FNAF 2 PSX
Developer: Soeiz
Genre: Horror
Version: 1.0.3
Release Date: February 2024
FNAF 3 PSX
Developer: Soeiz
Genre: Horror
Version: 1.0.1
Release Date: April 2024
QuakePSX
Developer: fgsfdsfgs
Genre: FPS
Version: Demo
Release Date: July 2021
Quake PSX
Developer: Bonnie Studios
Genre: FPS
Version: 0.1
Release Date: August 2026
Nortis (Notris)
Developer: Jimmy Breck-McKye
Genre: Puzzle
Version: 1.0
Release Date: August 2024
Snake
Developer: rubixcube6
Genre: Casual
Version: a2.0
Release Date: June 2021
Sonic XA
Developer: luksamuk
Genre: Platformer
Version: 0.6
Release Date: June 2024
Super Mario 64 PSX
Developer: malucard
Genre: Platformer
Version: Alpha
Release Date: November 2025
Tetrade
Developer: Logan Campbell
Genre: Puzzle
Version: 1.0
Release Date: March 2024
Tiny Backrooms
Developer: KasaBranca
Genre: Survival Horror
Version: 0.1
Release Date: July, 2026
Where in the pils is Fitzgerald?
Developer: Zhamul
Genre: Hide and Seek
Version: 1.0
Release Date: July 2026
Zelda: OOT PSX
Developer: Bonnie Games
Genre: Adventure
Version: Alpha
Release Date: February 2026
Frequently Asked Questions
An open source PS1 game is a game developed for the original PlayStation whose source code is publicly available. This allows anyone to study how the game was made, learn from its programming techniques, contribute improvements, fix bugs, or create new projects based on the original code, depending on the license.
A PlayStation 1 game is considered open source when its developers release the game's source code under a public license. While the exact permissions depend on the license used, open source projects generally encourage transparency, collaboration, and community contributions.
Yes. Most of the games featured on this page provide links to their source code repositories, usually hosted on platforms such as GitHub. In many cases, you'll also find links to playable builds, documentation, and development updates.
No. Although many PlayStation 1 homebrew developers choose to publish their source code, other projects remain closed source. Some developers prefer to keep their code private, while others may release the game but not the source code.
Most open source PS1 games are written in C, which remains the most common language for PlayStation 1 homebrew development. You can find a complete list of PS1 homebrew games developed in C on our dedicated page. Some projects also use C++, either for specific routines that require its features or to develop entire games depending on the SDK and libraries used. Check the list of games made in C++. There are also a few newer projects created with Rust, a more recent addition to the PS1 homebrew scene.
Today, PSYQ and PSn00bSDK are the most popular SDKs for developing PlayStation 1 homebrew games. Other SDKs and libraries, such as PSYQ-o or PSoXide, are also used depending on the project's goals and development environment.
Absolutely. Open source PS1 games are an excellent way to learn how games are developed for the original PlayStation. By exploring real-world projects, you can study graphics rendering, controller input, audio, memory management, game loops, and many other aspects of PlayStation programming.
In many cases, yes. If a project is actively maintained and accepts community contributions, you can report bugs, suggest improvements, submit code changes, or help improve documentation. Before contributing, it's always a good idea to read the project's contribution guidelines and software license.
In many cases, yes, but it depends on the license chosen by the developer. Some open source licenses allow you to modify, redistribute, and even use the code in commercial projects, while others impose certain conditions. Always read the project's license before using or sharing its source code.
Generally, yes, provided that you comply with the terms of the project's license. Many open source developers encourage others to learn from and build upon their work, but you may be required to provide attribution, release your own modifications under the same license, or meet other licensing requirements.
Most of the projects featured on this page are designed to run on original PlayStation hardware. However, as these are community-developed projects that may include experimental features, we cannot guarantee that every game will work perfectly on all consoles, revisions, or optical drive emulators (ODEs).
Yes. Most open source PS1 games can be played using PlayStation emulators, although compatibility and performance may vary depending on the emulator and the game. For the best overall experience, we recommend using DuckStation, a modern PlayStation emulator focused on accuracy, compatibility, and ease of use.
Each game listed on this page includes links to its official download page or project repository. The latest releases are typically available through platforms such as GitHub or itch.io, where developers also publish updates, changelogs, and additional documentation. We do not provide direct download links ourselves, as doing so would take traffic away from the original developers and their official platforms. The only exception would be cases where a game can no longer be obtained through official channels and providing a backup is necessary to prevent the project from becoming lost media. We have written an article explaining our approach to official links, supporting developers, and preserving projects that could otherwise become lost media.
Developers choose to release their PS1 games as open source for many different reasons. Some want to share their knowledge with the community, others want to encourage collaboration, and some simply want their projects to remain available and useful for future developers. Open source releases help preserve programming techniques, ideas, and experiences from the PlayStation homebrew scene.
The best way to support developers is by playing their games, sharing their projects, providing feedback, and reporting bugs. A simple message of appreciation can also make a big difference. You can also help by giving their projects more visibility, for example by sharing their games with others or uploading gameplay videos to platforms such as YouTube.