It was ok
I had fun with this game. I didn't find it too hard and I actually used the same strategy another poster used: max upgrading the level 1 fire and ice spells and then going for the level 3. Beat it my first try.
PROS: Fun defense game. I liked the variety of spells and how some monsters had immunities and weaknesses, preventing you from spamming a single spell. You had to use SOME strategy.
CONS: Something about it didn't really pull me in like some other defense games. I think the monster designs lacked a bit of imagination. A gorilla and a fox? Really? Some better art on the spells cast would've been fun. It was also pretty easy. As long as you aren't too scattered brained with how you spend your gems you should do ok. Honestly though, I didn't try out the other spells. Not really interested in a second run through.
Not bad though... look forward to the next one.