Just unlock the plasma tower,max it,and repeat that as many times as you want...not an original concept(among TD's),but 5 stars nevertheless,just because of effort put in it.
This game is brilliant,addictive and certainly is worthy of part2.Some easter eggs hidden on levels,terrain layout, different kind of trees(bushes)and maybe enemy crystals dividing into smaller shards when they are destroyed....Overall JAFORED - I've really enjoyed Your game,thank you
Game of the month.First of all there is no real life money involved in this.No waiting time for energy regen and etc.Simple,yet addictive.Graphics are good(and that is a nice thing for a flash game).Just one thing that bothers me - nerf the archers,because first 20 levels I just spammed them and and won easily.Also when enemy ranged creatures spawn in their castle(grotto,lair or whatever it is)they become invincible because castle is taking damage instead of the spawns.All in all great game with high re-playability value 5/5