The Conduit.
I really wanted an FPS for Wii. I loved Metroid Prime 3, but I wanted something like that, but with a more action-streamlined gameplay. I also like my sci-fi plot, and the game seemed to like to play with conspiracy tropes. Also, it looked pretty good for a Wii game, graphically.
However, the controls were difficult, the graphics are crap, the art style is boring, all the enemies are cookie cutter and have laughably bad AI, collision was inconsistent with shooting people sometimes, the plot was so dull it hurt, every level was a rail shooter, some of the guns really were terrible...