Ze Text Adventure game Builder : Create as you play !
Asphyre is a cross-platform framework for Delphi and FreePascal.
Molecular viewer and prototyping framework
JavaScript framework to build game engines, games, emulators and apps
Java Settlers
The classic intelligent role playing game
Amateur 3D Game Engine
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Sourceport of the classic Descent Level Editor
German Extension for Inform 7
Perl bindings to the Modern OpenGL API
An Animated 2D Game in the Turbo Compiler.
IRB is a game creation toolkit