3D modeler, 3D game maker, 3D demo maker
Open source cross-platform Java Visual Traceroute
Vulkan & DirectX port of the classic 6dof 3D shooters Descent 1 and 2
0 A.D. is a free, open-source, cross-platform real-time strategy game.
A 3D netback game (from falcon's eye codebase)
Robocode is a programming tank game for Java
Minecraft PE Alpha versions launcher for Windows and Linux
Lumina is a visual game creation environment for building 3D games.
3D Multiplayer Hover Soccer
World Class Leader Board Editor.
Various things for PSX (PlayStation 1, PSone)
Odamex is a free, cross-platform, modern client-server Doom engine
X3D is the open-standard format for 3D graphics scenes on the Web.
A companion for your LOTRO activities
Java3d scenegraph editor
Open Source Solid Modeling CAD
GameServer is a sophisticated, game server designed for online games
Arianne is an engine to develop multiplayer online games like Stendhal
3D platform action adventure with momentum-based flying