Good game but some flaws
I found this game a lot of fun, but since their are already a lot of reviews gushing over this game, i will focus on what I thought was wrong so you can improve.
1) I've played lots of defense games, and I owned and completed Puzzle Quest, but even on hard I found this game too easy. I did the first level on level, beat it on normal losing no lives(and a ridiculous amount of left over resources), then did the final level on hard, and also lost no lives. Maybe add more settings or make the hardest setting really hard
2) The levels go on too long. Tower defense games work best if you can play them in realitively short busts, but city of the dead took me over an hour to complete, and I was owning that level. Its also very annoying for people who have to lose and try again
3) On that note, more and shorter levels work best, and its make the game mroe ajdustable for a wide range of experince levels and prefernces
3) their are too many blue gems and not enough stuff to spend them on. Even buying freeze towers i was left with several hundrred blue gems left over.
4) I'm not sure their was much point to the shop or most of the other towers, as the stuff you started with was better than a lot of the items for sale (I wouldn't dream of swithcing out my spell), and their wern't that many items. Maybe either get rid of the equip limit, or add some spice to the shop items.
5) The game could lag sometimes
Apart from that, great game and I liked the music. This will make a fine addition to the defense collection