Fun! I love the wide range of little critters you can get and of moves the knight can use! Minimalist art styles always strike a cord with me and arranging monsters in the best sequence possiblereally feeds my stereotypically autistic brain.
As for critique... the knight gains moves throughout the game, but since they're kept for the rest of the levels it's not really worth strategizing around. By the end he has so many of them that any individual one doesn't really matter.
The game also kinda hits a gameplay plateau when you get your fifth and last monster slot since you can't really improve your team beyond maybe swapping in a few marginally better characters.