21. Gears of War (2005)
Platform: Xbox 360
Man, this game was a girlfriend killer when it came out (or boyfriend killer for the lady gamers). Reviewers praised the game for its visuals, presentation, and gritty post-apocalyptic plot. A sci-fi shooter that really made a name for itself by offering a multi-player mode that has remained largely unchanged within the franchise. Gears of War has become inexorably linked to this generation of consoles and introduced gamers at large to The Lancer: a combination machine gun, bludgeon weapon, and chainsaw. Thanks Epic Games!