Rating issues
In some levels, players must avoid obstacles such as puffer fish, crabs and cartoon-style ghosts. When hit, sharks blink as stars circle their head. There are no visible injuries and the sharks can’t be killed or defeated.
Other issues
Some songs have a Halloween-theme and feature dancing skeletons or cartoon-style ghosts. One song is about the Mexican Day of the Dead. This all occurs within a childlike context and is not scary or disturbing at all.