Arx Libertatis is a cross-platform, open source port of Arx Fatalis, a 2002 first-person role-playing game developed by Arkane Studios. Arx Fatalis features crafting, melee and ranged combat, and a unique casting system where the player draws runes in real time to effect the desired spell. The Arx Libertatis source code is based on the publicly released Arx Fatalis sources. This does however not include the game data, so you need to obtain a copy of the original Arx Fatalis or its demo.
StressItOut is a hardware stressing and testing program for GNU/Linux. Its main purpose is to strain the computer to ensure the hardware is in good state. There are several test modules: CPU load, memory test, 2D OpenGL painting, 3D OpenGL rendering, hard drives, optical drives, serial ports transmission, and parallel ports. Support for lm-sensors is in the works. This software, when ready for release, will mainly be aimed at the QA departments of hardware manufacturing companies, who need to ensure their newly produced machines perform correctly under heavy workloads, and that all their components work as expected.
Zaz is an arcade action puzzle game where the objective is to get rid of all incoming balls by rearranging their order. Currently it includes 20 different levels and two modes of gameplay. The engine allows for easy custom level creation with unlimited number of paths, different speeds, ball-sizes, and rules. A 3D accelerator is needed for decent gameplay.