Descent 3: Mercenary

Screenshots:

Background:
Mercenary is the expansion pack of Descent 3. It brings on new levels, more players modes, and plenty of other goods. There are also aliens to be fought with here as well. You are the leader of a Black Pyro ship and must continue your descent to power. Single-player and multi-player missions are available. In single-player the computer automatically selects the ship. There are seven different level campaigns to battle it out on. Make sure all hell doesn't break loose!