A game engine for console based text games
A Tile-based Game Engine written in C# mimicing retro consoles.
State Management and Multiplayer Networking for Turn-Based Games
A Rust framework for building Minecraft servers
OpenSource and DIY real electronic darts game
A Sudoku puzzle game
a UCI chess engine
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Open source revival of the game Transarctica / Arctic Baron
Snakes of Apocalypse is a funny multiplayer game
Defeat all the beasties to claim victory!
Volume 2 of ChaosEsque Anthology
DOOM / Heretic / Hexen source port with enhanced graphics and UI
Quake PAK file utility
Commander Keen Interpreter
Amazon Lumberyard is a free AAA game engine