According to ESRB, this game contains: Violence
Parents should know that MMX6 holds no content of a sexual nature nor does it present any form of harsh language, two elements commonly seen in video games nowadays. Also, aside from X shooting robot enemies, the game contains no excessive amounts of violence. Those who are searching for a game that will hold their children's attention for some time will have to look elsewhere. The frustratingly high level of difficulty the game presents will force many players to become uninterested fairly quickly.
Mega Man fans may want to rent this title just for the sake of trying it out, however I highly recommend against buying this game, as it is simply not worth its price.
Those who enjoy 2D platformers will want to avoid this title altogether. If there were any justice, this game would already find its rightful place in bargain bins.