EMA has established a ranking system for European Mahjong players – the Mahjong European Ranking System (MERS). It is based on the results of Mahjong tournaments that are certified by the EMA.

The EMA can acknowledge local, (inter)national European tournaments and championships to be rated as MERS competitions. Also online tournaments organized by EMA partners may apply for certification. Further important tournaments may also be certified. All certifications are decided by the presidium of the EMA.

Local and (inter)national MERS competitions in Europe must be organized or promoted by a member organization or partner of the EMA.