Open-source Android/Desktop remake of Civ V
An open source flight dynamics & control software library
Enables Roblox developers to use professional software tools
Lightweight console for Minecraft chat and automated scripts
The source code to VVVVVV
Games for tomorrow's programmers
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A dead simple 2D game library for Go
A game framework written with osu! in mind.
The flexible game engine
RPG Maker 2000/2003 and EasyRPG games interpreter
Just another ComputerCraft fork
Cross-platform, open source, and super fast MUD client with scripting
High performance UI layout library in C
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
2D game development library for Ruby and C++
A very efficient tutor.
Chess Database and PGN viewer
A cross-platform port of Hexen II game.
A GNU/Linux operating system accessible for visually impaired.
LDraw™ editor for LEGO® style digital building instructions.
Action RPG that's easy to mod
Yet another Pathfinder Character Generator
javascript chess games viewer for websites, blogs and live broadcasts
Full featured MUD server with all the trimmings.