Descent: Freespace

Screenshots:

Background:
Descent: Freespace is a space-combat simulation game where you're a Terran recruit in the Galactic Terran Alliance, at war with the alien Vasudan race. Command and redirect up to 12 wingmen at a time during missions (in a story with branching paths). Choose from 8 different fighters and bombers. Up to 12 player Internet support and 8 player team vs. team support!