DayZ is rated M.
DayZ Age Rating | DayZ Parents Guide
The Production Company is Bohemia Interactive Studio.
However, DayZ is rated M for Drug Content, Partial Nudity, and Violence.
The game DayZ is rated M in Australia.
Moreover, the PEGI rating is based on the physical content of the game and not on the players’ condition or their abuse usage online.
DayZ Parents Guide
Official Poster and Details