vary hard, but yet very fun.

Song when you get defeated?

And also, this game is well-made and fun!

Good game, needs more levels!

This is a good game; challenging but fun to play. Even after maxing out my character's abilities I still struggled sometimes: level twelve is especially difficult. When I first played this game early levels were quite difficult when abilities were first introduced but I quickly got a hang of. The only reason this doesn't get a five star rating is because there is not enough content: there aren't enough levels, I've noticed somebody said in their review that Mana is never explained and should be but I can forgive that there isn't an explanation for it. In my opinion one isn't needed nor is a zombie back story. Overall a good game, short, but it has plenty of re-playability and can be challenging regardless of how strong/how many upgrades you have: the real skill is in strategy.

Deserve a good polish, not graphical wise, but the whole concept. The idea is very good but as noted, the "mana" bar have no explanation at all. Also, the game only offers some challenge at level 12, the rest was pretty easy.
I was a little disapointed when new elements weren't brought to the game, like, perhaps a bigger grid with more colors and blocks that do something different. The upgrades itself are kinda "meh".
I point all these things because I truly think the game can be something way better than this ok product. Maybe a "history" mode, and a needed upgrade on "AI/Difficulty".
All that being said, the thing that could really bring this game to another level is a multiplayer mode, the puzzle battle style of the game would be really fitting and interesting.
Nice work so far, tho.