Greatest Franchise Comeback after a Poor First Game

[Zippy6]

I really can't think of many games that were "poor" and went on to have successful franchises.

The originals weren't poor by any means, but I can think of several second games that were a huge improvement on the first: Smash Bros Melee, Crash 2, Ratchet 2, SSX Tricky, Wipeout 2097...