Probably Dead to Rights: Retribution. Or if we're going for shock value like this thread seems to like to do I'll say Killzone 2 as well.
I don't own either anymore... because I don't "collect" games I don't like, I get rid of them. The worst game that I own is Monster Hunter Tri... that's because I haven't sold it yet.
The worst games I own and plan to keep is probably Dirge of Cerberus or Final Fantasy IV from FF Chronicles.









