Really good
Pretty good game. I found the game really easy, I just about never lost health, and for SEVERAL of the levels I was killing all enemies as soon as they got on the screen and was just waiting for the rest to come.
I think the trick is just to focus on 4 spells, so that every upgrade you buy gets utilized 100% of the time. I used fireball, icicle, boulder drop and easter. You get a little bit of everything (burn effect, slow effect, easter effect to stop "bosses," and some splash damage in boulder). It can be rough when there are a lot of monsters strong against earth, but it works out well because your two other spells, fire and icicle, recharge quickly and have many shots so you can get by with just using those two if needed.
Cons with the game:
The game is structured so its not good strategy to try out different spells. That makes the game kind of repetitive because you're using the same spells over and over.
Game is too long, I quit after lvl 24 because it got too boring.
The limit spells could be better explained. I didn't even realize that 5th was for limits until about lvl 23. I didn't even need it yet though.
No pause button???
And dear god, a few different lvls would of been great. What this game needed was a few different environments that had different looks and walking paths. That would of brought a lot more variety to the game.
But overall, really good game :)