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Top 23 C# Gamedev Projects
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WaveFunctionCollapse
Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics
Project mention: Bitmap and tilemap generation from a single example | news.ycombinator.com | 2026-04-30 -
ReSharper
ReSharper is now available in VS Code and Cursor. ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.
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Project mention: MonoGame: A .NET framework for making cross-platform games | news.ycombinator.com | 2026-03-07
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unity-mcp
Unity MCP acts as a bridge between AI assistants and your Unity Editor. Give your LLM tools to manage assets, control scenes, edit scripts, and automate tasks within Unity.
Community projects, like those from CoplayDev and CoderGamester, focus on speed and flexibility. They expose many parts of the Unity editor as MCP tools, which makes them great for experimentation and fast iteration.
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MarkovJunior
Probabilistic language based on pattern matching and constraint propagation, 153 examples
Project mention: Let's Take Esoteric Programming Languages Seriously | news.ycombinator.com | 2025-10-12 -
Project mention: MonoGame: A .NET framework for making cross-platform games | news.ycombinator.com | 2026-03-07
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Entitas
Entitas is a super fast Entity Component System (ECS) Framework specifically made for C# and Unity
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sbox-public
s&box is a modern game engine, built on Valve's Source 2 and the latest .NET technology, it provides a modern intuitive editor for creating games
Project mention: S&box – Game engine built on Source 2 and .NET from creators of Garry's Mod | news.ycombinator.com | 2026-04-23 -
SaaSHub
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Unity-MCP
AI Skills, MCP Tools, and CLI for Unity Engine. Full AI develop and test loop. Use cli for quick setup. Efficient token usage, advanced tools. Any C# method may be turned into a tool by a single line. Works with Claude Code, Gemini, Copilot, Cursor and any other absolutely for free. (by IvanMurzak)
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Project mention: MonoGame - A Game Engine for Those Who Love Reinventing the Wheel | dev.to | 2026-05-22
FNA - Another XNA Implementation
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YarnSpinner
The core compiler and engine-agnostic components for Yarn Spinner, the friendly dialogue tool.
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com.unity.multiplayer.samples.coop
A small-scale cooperative game sample built on the new, Unity networking framework to teach developers about creating a similar multiplayer game.
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Arch
A high-performance C# based Archetype & Chunks Entity Component System (ECS) with optional multithreading.
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UnityHFSM
A fast, tried-and-tested hierarchical finite state machine library for Unity, designed to be easy to use yet powerful without compromising performance.
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SadConsole
A .NET ascii/ansi console engine written in C# for MonoGame and SFML. Create your own text roguelike (or other) games!
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DotRecast
DotRecast - a C# port of Recast & Detour, Industry-standard navigation mesh toolset for .NET, Unity3D, games, servers
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SaaSHub
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C# Gamedev discussion
C# Gamedev related posts
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MonoGame - A Game Engine for Those Who Love Reinventing the Wheel
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S&box – Game engine built on Source 2 and .NET from creators of Garry's Mod
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How to Integrate Mirror and SocketIO in Unity — A Hybrid Multiplayer Architecture
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Wave Function Collapse Algorithm
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How to Build a Multiplayer Lobby in Unity with Socket.IO
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How Unity WebGL Talks to a WebSocket Server (The Hard Way)
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S&box: a spiritual successor to Garry's Mod and a love letter to Source 2
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A note from our sponsor - SaaSHub
www.saashub.com | 8 Jun 2026
Index
What are some of the best open-source Gamedev projects in C#? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | WaveFunctionCollapse | 25,117 |
| 2 | MonoGame | 13,976 |
| 3 | unity-mcp | 10,377 |
| 4 | MarkovJunior | 8,122 |
| 5 | Stride Game Engine | 7,631 |
| 6 | Entitas | 7,627 |
| 7 | sbox-public | 6,256 |
| 8 | UnrealCLR | 3,300 |
| 9 | murder | 3,270 |
| 10 | Unity-MCP | 3,016 |
| 11 | FNA | 2,996 |
| 12 | YarnSpinner | 2,791 |
| 13 | com.unity.multiplayer.samples.coop | 1,931 |
| 14 | Arch | 1,719 |
| 15 | LLMUnity | 1,632 |
| 16 | UnityHFSM | 1,579 |
| 17 | SadConsole | 1,367 |
| 18 | raylib-cs | 1,346 |
| 19 | Riptide | 1,282 |
| 20 | ReGoap | 1,098 |
| 21 | DotRecast | 892 |
| 22 | Myra | 865 |
| 23 | ConvChain | 771 |
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