Sumo.io is one of the top free-for-all sports iO games. Alike with sl4sh.io, it's easy to find out power-ups on the map. Play the new competition like a wrestler and you need to push rivals off the unblocked stage before they do the same. Try to move throughout Sumo.io online quickly! Besides, you should eat sushi to grow in size. Similar to Slither.io, your movement speed will be cut down when you enlarge. Remember to approach the target carefully! Cut them off and you can loot their progress! Good luck!