After doing some Metacritic checks, the lowest rated game I can think of that I can honestly say I enjoyed was Fatal Frame: Maiden of Black Water on Wii U, which sits at 67.
I maintain it's not a bad game; it has issues with pacing and repetition, but I still enjoyed it for its incredible atmosphere, effective scares, and for making the best use of the Gamepad out of any Wii U game.








