PXO Supports the Following Games:

Descent: FreeSpace

The award winning space combat sim of 1998. FreeSpace takes you head-to-head with massive capital ships, devious AI aliens, and the best human pilots in the universe! Supports cooperative and team play for up to 12 players.

Other FreeSpace links:

Official FreeSpace website
Descent: Freespace Battle Pack on GOG.com
Descent: FreeSpace on Steam

Also supported:
Silent Threat Expansion Disk

Descent 3

The third game in the award-winning series takes you back into the mines for more gut-wrenching action. Play cooperative, anarchy, capture the flag, and many other modes with up to 20 players!

FreeSpace 2

The follow-up to Descent: FreeSpace brings massive Juggernauts, stealth fighters, AWACS ships, and Gas Miners. An innovative and immersive nebula environment changes gameplay dynamics, where impaired visibility, communications, and targeting ability create opportunities for ambush and new combat tactics. Supporting up to 12 players in dogfight, cooperative, and team play (8 players max). The addition of "SquadWar" pits squadron against squadron in a multiplayer battle for control of the universe.

Other FreeSpace 2 links:

Official FreeSpace 2 website
Freespace 2 on GOG.com
Freespace 2 on Steam