Roommania #203 , released on 2000 , is a simulation game for the Sega Dreamcast console. The story follows an average Japanese guy named Neji Taihei, who lives alone in his apartment and is struggling to improve his life. A spirit that resides with him starts to interfere with his daily routine, causing chaos in his life.
Players can influence Neji's behavior by interacting with objects in his apartment or throwing ping-pong balls at objects to get his attention. However, overloading him with too many ping-pong balls will result in depression and a decrease in the player's progress.