Whew, I was never particularly good at these sorts of memory games. So those extra boosts, like the extra time from matching Kronii or Ame, as well as the ability to reveal some cards, were quite useful. But at some point, the amount of cards there were just made it so overwhelming for me to keep track of it all even with all the extra stuff.
I think that sort of thing though is more just a "skill issue" on my part. I only made it to round 9, honestly. But maybe it could have been nice to have some more progressive boosts that helped out in some way since the amount of cards to match was growing very quickly.
Also, props to including as many members as you all did, including Stars members.
Overall, while it may not be my kind of game, I do think it was built solidly.