Favorite games that never got proper sequels

[curl-6]

No Binary Domain yet?
Binary Domain.

Deceptively brilliant game; on the surface it looks like your average 7th gen third person shooter, but the twist is that you fight robots, and the way they smash apart as you shoot them, drop their gun if you blow their arm off, crawl towards you if you shoot off their legs, etc just gives such satisfying feedback.