The core gameplay is quite promising. I noticed that the matches were happening automatically when new orbs came in from the top, and the cycle would repeat until there were no more new matches. Not sure if this is how it is in match-3 in general (haven't played a lot), but I felt this to be a bit more random than necessary. With this core gameplay, plus the kind of variations and mechanics planned in the document, I think this can shape up to be a cool game!