The Red Odyssey

This expansion pack requires Battlezone to work.

From the manual:

The struggle between the CCA and the US forces in space is escalating. The Americans have followed the Russians to the Jovian system in pursuit of the Fury technology, and have fanned out across the four major satellites. On Europe, Callisto and Io, their battle is moving back and forth, with no sign of a victor yet, but nothing has happened on Ganymede…until now.

You can visit http://www.battlezone1.com/ to get more info on the Installer. Also, you can get tons of downloadable extras, mods and more on BZ Scrap