15
Valve
19
Freeware
A tool, shared between all owners of Valve Source games and locked to a particular engine.
325
Valve
1,283
Commercial
A First Person Shooter that delivers a new way to play online games.
83
Valve
257
Commercial
This is a first person shooter game and is a complete remake of Counter-Strike.
9
Valve
14
Freeware
A game which combines leading-edge character animation and real-world physics.
The Game Creators
8
Commercial
Dark Source is a collection of nearly two hundred source code snippets.
Daniel Walder
36
Open source
Sledge is a free and open source Valve Hammer editor.
Sokyra allows you to share Valve Steam games among your LAN game center.
I. De Marchi
255
Freeware
WPieces is an open source game based on the Chinese game called Tangram.
Neural Networks Research Group
5
Freeware
Open source game platform designed for game AI research.
1
Miguel Escudero Gestal
11
Open source
Tubularix is an open source game based on the classic puzzle game Tetris.
Open Game Panel
33
Open source
Open Game Panel is an open-source web based Game server control panel.
9
USDX Team
3,702
Freeware
UltraStar Deluxe is an open-source karaoke game for your PC.
6
The DreamChess Project
1,068
Freeware
DreamChess 0.2.0 is a multi-platform open source chess game.
