Tsuppari Oozumou, a Japanese-exclusive NES game, likely centers around the sport of Sumo wrestling. Further details about the developer and gameplay specifics are scarce.  Based on the title, the game would likely involve players controlling a Sumo wrestler, possibly navigating through matches or tournament-style gameplay. The graphics and sound would adhere to the common NES standards, and the game would probably have a focus on traditional Japanese themes and visuals. 

Tsuppari Oozumou (Japan)

Trojan (USA)