Not a full fledged open-world AC-game, but a 2.5D side scrolling platformer. The art-style of the maps and cutscenes is really beautiful and matches the asian theme perfectly. Love it.
Borderlands 2 (technically my brother's). I never finished the first one because backtracking and going in circles was driving me crazy, and it was the reason I didn't get the second one; yet, here I am trying again