According to ESRB, this game contains: Animated Blood, Mild Violence
For parents, this game isnt exactly riddled with gratuitous violence, sex, and profanity. However, with all the devilish monsters, the horror theme may be too intense for younger players. If your kid doesnt like scary movies, this may not be the ideal title for them.
It is also strongly recommended that all gamers purchase a Game Boy Advance light to compensate for the sometimes-intense "darkness" in the game.
Long-time fans of the Castlevania series will adore Circle Of The Moon. It is highly regarded as the finest launch title of the Game Boy Advance and a notable entry in the franchise.
Fans of old-school "platform" games will also enjoy the many hours of classic and semi-updated gameplay that Circle Of The Moon offers.
For fans of cutting-edge 3-D graphics games, this probably isnt what you are looking for. The bitmapped graphics are good, but not a technical or artistic marvel.