taisei-project/taisei
FreeA free and open-source Touhou Project fangame
FreeFree tier
About taisei-project/taisei
Taisei Project is an open source fan-game set in the world of Tōhō Project. It is a top-down vertical-scrolling curtain fire shooting game (STG), also known as a 'bullet hell' or 'danmaku.' STGs are fast-paced games focused around pattern recognition and mastery through practice. Taisei Project is highly portable, and is written in C11, using SDL3 with an OpenGL renderer. It is officially supported on Windows, Linux, macOS, and through WebGL-enabled browsers such as Firefox and Chromium-based browsers. It tells an original story with its own music, art, gameplay mechanics, and codebase. Precompiled binaries are available on GitHub Releases.
Key Features
Top-down vertical-scrolling curtain fire shooting (STG) gameplay
Written in C11 using SDL3 and OpenGL renderer
Highly portable across multiple platforms
Officially supported on Windows, Linux, macOS, and WebGL browsers
Original story, music, art, and gameplay mechanics (not a clone)
Open source development with source code on GitHub
Precompiled binaries available for Windows, Linux, macOS
Experimental WebGL build for browser play
Pros & Cons
Pros
- Free and open source with no cost
- Cross-platform support including browser via WebGL
- Original content separate from Touhou series
- Active community with 1.6k stars on GitHub
- Uses modern C11 and SDL3 for performance and portability
- Replay, screenshot, and settings management
Cons
- Niche appeal as a Touhou fangame; may not attract non-danmaku fans
- WebGL build is experimental and may have limitations
- Requires compiling from source for some platforms
- Limited documentation or tutorials for new players
Best For
Playing a bullet hell (danmaku) shooting gameExperiencing an original Touhou Project fangameContributing to open source game development (C, SDL3, OpenGL)Running on unsupported platforms via source compilation
FAQ
What is Taisei Project?
Taisei Project is a free and open-source fan-game set in the world of Tōhō Project. It is a top-down vertical-scrolling curtain fire shooting game (STG), also known as a bullet hell or danmaku.
Is Taisei Project a clone of Tōhō?
No. Taisei tells an original story with its own music, art, gameplay mechanics, and codebase. While set in the Tōhō world, it is not a clone.
On which platforms can I play Taisei Project?
Taisei Project is officially supported on Windows, Linux, macOS, and through WebGL-enabled browsers such as Firefox and Chromium-based browsers (Chrome, Edge, etc.). An experimental Nintendo Switch build also exists.
How do I install Taisei Project?
Precompiled binaries are available on the GitHub Releases page for Windows (x64), Linux, and macOS. You can also play the experimental WebGL build directly in your browser. For source compilation, instructions are provided in the README.
Is Taisei Project free?
Yes, Taisei Project is completely free and open source. You can download, play, and modify it at no cost.