Party Time - Gonta The Diver

Party Time is an Erotic-Puzzle from Mitchell

Like by his predesessor Lady Killer, the protagonist is Gonta, a funny little diver the player controls. After choosing one of the girls, you'll have to guide Gonta with the joystick over an invisible tile-grid set over water. His only skill is diving (he can't shoot or jump), and everytime he does so a tile turns, progressively revealing more of the girls' figure. Turn all tiles to clear the stage and have the girl lose some clothes, and repeat to eventually get the main prize...