Plot: Pro Tennis: World Court is a tennis sports arcade game that was released by Namco in 1988 only in Japan; it runs upon Namco System 1 hardware, and was inspired by the 1987 Famicom game Family Tennis. Wikipedia
Plot: Smart Ball is a platform game developed by Game Freak and System Sacom. It was published by Epic/Sony Records and Sony Imagesoft for the Super Nintendo Entertainment System in 1991. A sequel titled Jerry Boy 2 was in production, but was not released. Wikipedia
Plot: Blood Gear is action role-playing game developed by Westone and published by Hudson Soft. Originally released for the PC-Engine CD in 1994 later re-released for the Wii Virtual Console in Japan.