Will there be any set limits on what the games should/should not have, since they'll be showcased in such a public place?
Viewing post in Showing City Game Jam Games at A.Maze Festival, Berlin
The event is still ticketed (so not totally public), and from my experience, A.Maze welcomes adventurous and thematically bold work. I'd say don't let your own ideas about content appropriateness for the festival affect what you're making. I'd advise labeling it as age-appropriate and in the event that A.Maze does raise concern, we'll cross that bridge.