This game is just awesome. I was searching a fighting game for my son. He is fond of boxing. It is just what I wanted him to play. I think this game is quite ok for a 5 year old school boy. Without killing anyone and spilling blood on the arena. So mummies and daddies, here's the game
https://dmnd.games/games/brute-arena/how-to-play, you know what to do.