The Empire Strikes Back. The Dark Knight. The Godfather: Part II. Each of these film sequels is even better than the original movie.
Few game sequels manage to reach that level of excellence, wallowing instead in derivative story lines and unevolved game mechanics (Duke Nukem Forever, anyone?).
But a few games break the mold. Check out these 11 sequels that honor the original by improving on it—starting with a series that corkscrewed from straight and serious into twisted and insane.