Though really simple, this arcade game has enough challenge to make it super addictive, but its cutthroat nature and iffy usernames might not work for younger players. While the game itself is rather innocuous, you'll undoubtedly run into someone whose name is a curse word, or is sexually explicit, or makes a drug reference; however, there are no racy visuals, so if the words alone are OK in your family, then there's nothing to fear. Also, it's very easy to lose again and again, and it takes a lot of gameplay to level up and get really big, which means kids could play for hours with no clear end in sight. Parents may want to set limits before downloading and know that the game is also available online, which means kids could turn off the phone and continue to play on the computer.