Yosumin! PC Steam Download Key. Requires the Steam Application freely downloadable. Item dispatched fast within a few hours at most times. Selling more games. Game Description: Make rectangles of the same type of yosumin to make them disappear in this mind-bending puzzle game. The more you get, the better you'll feel! Yosumin! Square Enix's puzzle masterpiece, is here! Simply select rectangles of the same type of yosumin to make them disappear in this simple yet challenging puzzle game. There are two game modes available.