The Ethics Organization of Computer Software (EOCS) is an organization that rates video games released for PC and mobile devices in Japan.  It was originally formed by members of the Japanese adult game industry. It aims to promote a sense of ethical responsibility with respect to the production, distribution, and use of computer software.
Among its activities are:
- Support bishoujo games
- Combat software priacy
- Scholarships for students interested in becoming software designers
- Recognize good retailers (segregating games of different ratings, etc.)
The EOCS screens and rates over 30,000 software every year. 
The EOCS has three levels of ratings for software:
- General: All ages.
- Restricted: Must be 15 or above.
- 18+: Must be 18 or above.
|ESRB (United States/Canada/Mexico)|
|PEGI (Europe) • BBFC (UK) • ELSPA (UK, retired) • USK (Germany) • VET (Finland)|
|CERO (Japan, console) • EOCS (Japan, PC/mobile) • GRB (South Korea)|
|ACB (Australia) • OFLC (New Zealand)|