Xash3D FWGS engine
The flexible game engine
The ioquake3 community effort to continue supporting/developing id's
A completely free, open-source, 2D game engine
Rcon client for Minecraft
Classic overhead run-and-gun game
A free and open-source Touhou Project fangame
A free/open source client and automation tool for Ragnarok Online
An OpenGL RTS game engine written in C
Go bindings for raylib, a simple and easy-to-use library
Gideros Release version
RTS game with the theme of Strategy by Design
A cross-platform chess game.
Cross-platform version of the classic puzzle game "Sokoban"
0 A.D. is a free, open-source, cross-platform real-time strategy game.
A modern, cross-platform Quake game engine based on FitzQuake.
Cross-platform real-time strategy game (3D)
A cross-platform port of Hexen II game.
The classic board game "Mastermind" for various Z80 computers
A 2D multiplayer space shooter game
INSTEAD - Simple Text Adventure Interpreter.
Emulator of the 8-bit computers Sharp MZ-800 / MZ-700 / MZ-1500
3rd Party Video Games Developer: MetalManGames, titles of games
A cross-platform, multimedia interpreter for TADS adventure games.
A simple math library for games and computer graphics