This is a fun little game! I love the rhymes and cute art style. A lot of different challenges are built around the different monster types.
The isometric controls are a bit unusual, but you get used to it quickly enough. Some of the later levels are hard to beat for me, but it's good that the game stays challenging.
Some criticism: the UI design still requires some attention (fonts, placement and layout - although it's good that everything is animated), and the music sounds a bit "General MIDI"-like. However neither of those things detract from the fun game play, so it's all good.
I got it in a bundle, but this is definitely worth the price if you like cute, wholesome, old-fashioned arcade-like challenges.