"Biggest drop in quality" sequels

[Kizmi]

Fable 2 --> Fable 3
Deus Ex --> Deus Ex: Invisible War
Red Alert 2 --> Red Alert 3
Heroes of Might and Magic 3 --> HoMaM 4
Dragon Age: Origins --> Dragon Age 2
Crysis --> Crysis 2
Skate  2 --> Skate 3
Team 17 with Worms-Franchise: every sequel is worse