A toughy. EDF 4.1? Dead Nation? Just Cause 2? Dishonored? I'm trying to think of some choices that I loved that may be considered oddball. Impossible for me to narrow it down to one, but I'll try to edit later.
These games arent from this decade.
Bet with Intrinsic:
The Switch will outsell 3DS (based on VGchartz numbers), according to me, while Intrinsic thinks the opposite will hold true. One month avatar control for the loser's avatar.