In Sumo Slam, players maneuver their sumo fighters around the arena, using their weight and momentum to push opponents out of bounds. The game features different modes, including Journey Mode, where players battle increasingly stronger opponents, and Multiplayer Mode, where up to four players can compete against each other. There's also an Endurance Mode, where players must knock out as many opponents as possible in a survival-style challenge.
The controls vary depending on the number of players, with arrow keys, WASD, and other key combinations used to move the wrestlers. The game is known for its fast-paced, chaotic gameplay, making it a favorite among fans of classic Flash fighting games