You could choose from 5 games + 1 reshuffle. I think you could say on which platform you would like to rate and the jam had at least either windows or html upload as a requirement.
Hm... the issue is that this jam has no such platform requirements, plenty of people have done mobile-only, VR-only, or Mac-only games. Those games usually don't get many ratings, but at that point that's their choice to make lol.
But, I suppose it could be done with more reshuffles, plus letting u lock platforms more.