From Developers Website
Developed by the creators of the BattleTech Universe and original MechWarrior™ game, MechWarrior 4: Vengeance portrays the players' epic struggles to reclaim their birthright as they command an awesomely armed, 40-foot tall, 100-ton war machine across the remote battlefields of a hostile world. MechWarrior 4: Vengeance
Packed with intense action, MechWarrior 4: Vengeance places you in command of a legion of BattleMechs in a heroic struggle to liberate an oppressed planet. If you survive, you will have saved the planet. If you die, you die a hero. You will feel fear, but your enemies will know terror!