Rating issues
Features occasional, very mild violence in a comical context. The cartoon characters can get hit by the balls. When they do, they react in a very mild and humorous way. They can also get shocked by thunderbolts, causing their skeletons to show for a brief period of time. Crabs and other birds take on a funny expression when hit by the player’s gunfire, and fall off the screen.
Other issues
There is a boss that explodes when defeated, causing some particles that could be seen as its entrails to fly around the screen.