Microsoft's latest mech simulation game, MechWarrior 4: Vengeance, has gone gold and will ship to stores in early December. The game is set in a dynamic BattleTech universe populated by powerful 40-foot tall 100-ton mechs. Players can command 21 different types of mechs, each of which can be customized with new weapons, armor, and sensors. In addition to a variety of single-player missions, the game features several multiplayer modes as well. For more information about MechWarrior 4: Vengeance, take a look at our extensive collection of previews, movies, and screenshots of the game.