Rating issues
There is no real violence in this game. Your character cannot die and the emphasis is on puzzling. There are however some environmental hazards, such as laser beams or particle beams. These hazards can stun or daze you, but no harm is inflicted on the character.
Other issues
This game requires you to think out every move and find the most logical path through a level. Flipping the right switch or using the right item in the correct order. This game may not be suitable for the youngest of players.