CERO (The Computer Entertainment Rating Organization) is the organization that rates video games and computer software in Japan with levels of rating that inform the customer of the nature of the product and for what age group it is suitable. It was established on July 2002 and used the ESRB as a model.
- BBFC, the British media rating system
- ESRB, the United States and Canadian computer and video game rating system
- PEGI, the European computer and video game rating system
- ELSPA, the former British computer and video game rating system, replaced by the PEGI ratings.
- USK, the German computer and video game rating system
- OFLC, the Australian media rating system
- OFLC (NZ), the New Zealand media rating system