Riddle School 1-3:
Rated E: Comic Mischief
Concept: Riddle School is an escaping school simulator which uses rubber bands to make people blind and distractions.
Riddle School 4-Transfer 2:
Rated E10: Fantasy Violence, Crude Humor, Riddle School 4 has a Mild Blood Reference.
Concept: Those games have Fantasical enemies like Aliens and all that with them aiming weapons and also crashing and killing people with mild blood images in the credits. There are puns sometimes.