Descent is a 3D first-person shooter video game which spawned two direct sequels (Descent II and Descent³). Descent was developed by Parallax Software and released in 1995. The series has a strong following due to its unique "six degrees of freedom" gameplay. Descent offers excellent competitive multiplayer game play over a LAN.

Numerous open source projects based on the source releases of Descent and Descent II have appeared on the Internet. A Windows-specific open source development branch was spawned from the D2X project, fixing all of the issues D2X still had and adding a lot of new features, such as the ability to play Descent missions in Descent 2. This branch was originally titled D2X-W32 but was ported to Linux and Mac OS X later on, and renamed to D2X-XL to reflect both the broader scope and greatly enhanced feature set of the project.

D2X-XL is the most advanced and feature-rich user-enhanced version of Descent to date, and offers many features like colored lighting, smoke, real-time shadowing, new weapon effects and new game modes that enhance the single-player experience and give new twists to multi-player games. As most ports, it retains full compatibility with the original game and can be switched in appearance between a graphically updated version, and the original look and feel of Descent.

TrackIR works with Descent 1 and 2 (thanks to Dietfrid Mali's D2X-XL utility). When development is completed, this title will be TrackIR Enhanced with 6DOF.

Supported D.O.F: