Open-source Android/Desktop remake of Civ V
Programming eXperience Toolkit
The source code to VVVVVV
Python MUD/MUX/MUSH/MU* development system
An open source flight dynamics & control software library
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
Games for tomorrow's programmers
The Echo Engine is a simple game engine for text adventure games
Chess Database and PGN viewer
Text adventure: Battle monsters & cast spells to claim the Orb of Zot!
Ze Text Adventure game Builder : Create as you play !
Create meks and more!
Tools and Z80 engine for creating adventure games. (RUST)
A cross-platform port of Hexen II game.
Yet another Pathfinder Character Generator
Full featured MUD server with all the trimmings.
quiz game with spin wheel
LDraw™ editor for LEGO® style digital building instructions.
InterBBS medieval door game
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
PyCAPGE - Python Classic Adventure Point and Click Game Engine
A promising chess program
A very efficient tutor.
Galgame's Multilingual Real-time Machine Translation Tool
A game engine for console based text games