Simplify the following text for a Grade 12 native English-speaking person.
Original: The Computer Entertainment Rating Organization ( CERO ) is the organization that rates video games and PC games ( except Dating sim , Visual novel , and Eroge ) in Japan with levels of rating that informs the customer of the nature of the product and for what age group it is suitable .
Simplified: The Computer Entertainment Rating Organization ( CERO ) is a group that rates video games and computer software in Japan .