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
Enhanced Zork port for Android Systems
Text adventure: Battle monsters & cast spells to claim the Orb of Zot!
Create meks and more!
Ze Text Adventure game Builder : Create as you play !
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
Tools and Z80 engine for creating adventure games. (RUST)
A cross-platform port of Hexen II game.
Tools for Super Tux Kart server operators
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
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)