Top 5 Disappointing Videogame Sequels

1UP has compiled a list of what they consider to be the five most disappointing video game sequels of all time. Chrono Cross comes in at #2 while Deus Ex: Invisible War takes the #4 spot:
How do you follow up a revolutionary first-person shooter like Deus Ex? The simple answer: Don't drop the complexity that made the original so different in the samey FPS genre. It's true that games like BioShock have toned down the RPG elements of their older siblings without suffering as a result, but Invisible War felt far too much like a remedial version of the original. Instead of taking advantage of greater technology to build bigger worlds with even more choices, Deus Ex underwent a dumbing down that stands out more as a wasted opportunity than the streamlining of a once-intricate game.