Desktop/Android/HTML5/iOS Java game development framework
Lutris desktop client in Python
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Flexible level editor
An award-winning drawing program for children of all ages
VR Adrix Java Works - Paged Lists - Action-Entity Model ...
For exploring cellular automata like Conway's Game of Life.
Cooperative multiplayer graphical RPG and adventure game
Android, UIQ 3.0, Series 60 Edition 5 open-source software
The ultimate cataloguer
Retro style, multi-platform soccer game
X3D is the open-standard format for 3D graphics scenes on the Web.
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Helpful tools to extend the NWN Toolset
Collection of simple Java Mangement Games
Collection of simple Java Sport Games
Collection of Simple Java War Games
Klotsky class block slider puzzles.
Warlock is a front end for Simutronics text-based games.