This game requires minimal coordination to play, but pretty good timing to master (e.g. blocking, dodging, and attacking at the right time). For little kids, the timing can be tricky and frustrating. They also have a tendency to stop playing and just watch the screen, especially if the other player's character is moving around.Sometimes it's frustrating that the game won't pick up the basic moves properly (it gets confused about kneeing, punching, and uppercutting, which is the bulk of what you do). The advanced "powerup" moves work very well because they rely on larger motions, such as flapping your arms like a bird, using one arm like a whip, or doing the "kamehameha" from Dragonball-Z. It's rare for it to mess that up.I think kids will prefer playing against adults unless the kids are evenly matched. While it's very fun and funny to watch kids learning the game and fighting each other, once they get comfortable a consistent advantage in timing will mean one kid completely destroys the other, match after match. Adults can moderate what they do to let the kids win.