EA

Description from its website:

EA supports the Entertainment Software Ratings Board (ESRB) and game ratings. As a founding member of the ESRB, we believe in an industry-supported, voluntary rating system. Ratings are designed to provide accurate and objective information about the content in computer and video games so that consumers can make an informed purchase decision. The ESRB is an independent organization which assigns game content ratings, enforces advertising guidelines and helps ensure responsible online privacy practices. EA's computer and video games as well as our marketing materials are submitted to the ESRB for review – each carries an ESRB rating. We strongly support efforts by the Entertainment Software Association (ESA) and the ESRB to educate consumers, parents and retailers on the ESRB rating system.