I really enjoyed playing at first but near last prime masters it became frustrating cause battles started to feel not about outsmarting or figuring out unique way against different decks, but about cheesing ridiculously overpowered bosses who have just infinite energy(wow I beat 89 and get this gem, so sad I can use it only with 43 because I don't have 170 energy, I have literally less than this costs), with some absolutely not interesting strats.

Maybe I am stupid, but from 71 it was not any fun, it was just "my gems-generating thing generates more gems than your gems-generating thing".  I beat 71 and 79 with deck "23, 43, 77 and many 59-s", it is boring deck so it's cool that it stops work later, but because almost anything doesn't work on 83 and 89, my winning decks for these levels are almost full of 1-s, I don't think this is interesting. 

Also, I don't like 89 and 97  cause stealing is just too random sometimes and you can just keep restarting trying to get better first turns(and I was doing so cause of frustration). 

I understand that many things I didn't like or became frustrated of can be not an objective problem, but I hope this feedback will be any helpful, cause I really liked this game but also was really frustrated from some point.

P.S. Also any hints on 97 would be appreciated :)

Second post by Forever angel, which also got caught in the spam filter:

I became really frustrated after some point(and even more frustrated when itch io didn't save my post). While first levels feel like they are about outsmarting opponent and finding a unique approach based on some idea for everyone, last prime masters feel like just ridiculously overpowered gem-generating machines with no-matter-how-many-cause-it-almost-infinite-energy that you can only cheese with some very specific decks. 

My approach for 71 and 79 was "23, 43, 77 and many 59-s", that was not any fun, I beat one level immediately after another first try without changing my deck, what's the point? And while later it stopped working, it was only cause almost everything stopped working and I wanted to drop game cause of 83 and 89. Especially 89, it just stresses you out and then when you beat it goes like "haha, this gem is useless for you cause you have only 85 energy and need of 43-s makes this deck almost useless against thing that just spam about 20 gems on board in first 3 turns". I beat 83 and 89 with some recombinations of only 67-s and 1-s, it was not fun at all,  there are many cool and interesting gems but it felt like I was getting punished for trying to use anything interesting. Almost all gems from second half don't give a **** about what is on the board they interact with your decks and cards, board-control and right placing gems becomes meaningless, all effects of early-game gems are countered by 23-s, things from lab are cool but they are usually used as "yet another 7 cause I have only 3 of them in my library" or something like this(and for getting 73 and 0, that was fun to figure out). I understand that my problems can be nothing near objective, but I just really liked this game but also became frustrated with it and if this can be somehow fixed I would be really happy.

P.S. Any hints for 97 would be highly appreciated :)

Thanks for the feedback, Forever Angel! Sorry I didn't check the spam filter for 7 months, itch doesn't notify me about it.

Very good points. I probably need to give the later boards more interesting shapes in order to weaken stone-spamming strategies (both yours and the opponent's) while improving strategies like fire and ice.

Regarding the uselessness of large stones like 83: The intent was that most players will not figure out the 77 combo, but will get -1 stone, so they might use -83 in their deck. And 89 is intentionally hard to use because they can potentially lead to very boring games.

Glad you enjoyed the 0 puzzle!