I am new to this so what is "Mirror" theme?
Basically, you have to create a game that is somehow related to mirrors in its mechanics and/or setting. (note that you can understand the term "mirror" however you want.)
Hm.... i thought of mirror's edge. Is that valid?
From the responses I see, it is valid. I'm not the jam organizer though, so my opinion is not exactly authoritative.
Hey Pekira! I answered this in my jam announcement video :) Check it out here