In 2006, Activision and Raven Software expanded upon their successful action-RPG franchise, X-Men Legends, to encompass the entire Marvel Universe. The result was Marvel Ultimate Alliance, and while comic and action-RPG fans agreed that the overall product was enjoyable, it also suffered from balancing issues, and was riddled with technical glitches. For the sequel, Marvel Ultimate Alliance 2, Raven was replaced by Vicarious Visions, and while they've managed to clean up most of the problems found in the original, sadly, there's not all that much different this time around.