Red Eclipse is a fun-filled new take on the casual first person arena shooter, built as a total conversion of Cube Engine 2, which lends itself toward a balanced gameplay, with a general theme of agility in a variety of environments. It features: Parkour, impulse boosts, dashing, and other tricks. Favourite game modes with an array of mutators and variables. A built-in editor lets you create your own maps cooperatively online.
The project is a Free and Open Source game, built on Cube Engine 2 using SDL and OpenGL which allows it to be ported to many platforms; you can download a package for Windows, GNU/Linux, BSD, and OSX, or grab a development copy from our Subversion repository and live on the bleeding edge. In a true open source by the people for the people nature, we try to work closely with the gaming and open source communities to provide a better overall experience, aiming to create a game environment that is fun and easy to play, while still having elements to master.
http://www.redeclipse.net/