What is the latest version of Descent released?

The original Descent runs under DOS and is (with some tweaking) playable on 386-based PCs at 33 MHz. With the release of the Pentium, the performance requirements were no longer an issue. Descent was ported to Apple's Power Macintosh in 1996 and both versions support multiplayer network play over a variety of protocols. A console port of Descent was created for the Sony PlayStation, and a sequel entitled Descent Maximum followed. The Playstation version of Descent Maximum contained the same soundtrack as Descent II, but had a completely unique level set, never released on any other platform. Like the Macintosh version, the Playstation version also features a Redbook audio soundtrack, something the original DOS Descent lacks (the soundtrack came as a MIDI score).