Stride (formerly Xenko), a free and open-source cross-platform C# game
Svelto ECS C# Entity Component System
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Tools and Z80 engine for creating adventure games. (RUST)
Create your own tiny chess bot
A work-in-progress chess bot written in C#
Molecular viewer and prototyping framework
Vivid3D is an open-source 3D engine with powerful 2D UI.
Galgame's Multilingual Real-time Machine Translation Tool
An ASI plugin for Grand Theft Auto V
Entitas is a super fast Entity Component System (ECS) Framework
Modern 3D engine and IDE written using C# and C++.
a 2D Game Development Framework
3D .NET engine for Windows, Linux, Mac
Sudoku engine for .NET 4.0 and up
XNA based game engine completely written in c#
An expanded XNA game creation framework
Open Source Virtual World and MMOG Development Platform
Horror Game Project
RPG Games without coding!
Anni is on free open-source C# UCI bitboard chess engine