According to ESRB, this game contains: Mild Violence
Parents should not be worried about the games content. It is extremely cartoonish and impossible to re-enact, unlike the chop-socky that results from too many Power Rangers episodes. The value of Bomberman Tournament goes up exponentially with the number of friends you have with Game Boy Advances.
If you are one of the few who can logistically get four willing players with Game Boy Advances in the same room, this is currently the best title to own.
Cost-conscious gamers may want to note that there are two new Bomberman Game Boy Advance games on Nintendo's future release list. It is possible that these games could feature more and better options for your gaming dollar, so you may want to keep an eye out for them when they are released.