Vectoroids is based on the X-Window PDA game 'Agendaroids,' but uses libSDL for graphics, sound, and input, and includes nicer graphics, sound effects, and music. The objective is to survive wave after wave of giant rocks, which you must shoot to break into smaller pieces, until they are completely destroyed.
Astro Battle is an online multiplayer space simulation game where players can design and pilot their space ships against each other. The spaceships are made up of modules. Modules are components that contribute some ability or property to the spaceship as a whole. Some examples of modules are bridges, thrusters, cannons, torpedo bays, reactors, and batteries. A Player can join an arena by challenging another player to a space duel or by joining a dedicated server (which can host several players at a time). Astro Battle also has a practice arena for testing ship designs offline.
World Foundry is a 3D level game engine and asset production pathway with over 170,000 lines of code. It was originaly created as a commercial product, but is now being released under the GPL. The engine was designed from the beginning to be cross platform, and ran on Windows (DirectX, GL), and the Sony Playstation. The production pathway ran on Windows, and extended 3DStudio Max to be our level editor. The engine is currently being ported to Linux (it runs, but needs work), with plans to port the production pathway as well. Developers are wanted to help with this effort.