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Some bugs i noticed: "iceball upgrade" requires a point in fireball, instead of iceball. If you build barricades in the line directly in front of your castle, enemies will ignore them and just attack the castle. If you upgrade max castle health during a mission and complete that mission perfectly, you'll still only get 2 stars because the upgrade increases max health, but not current health.
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I don't get it WHY WHY WHY are all the devs insisting on this stupid, no-good, boring, that-no-one-likes, freaking system where you have to pick up the coins all the time?!?!?!!?
Over and over and over... again ppl keep telling them GET RID OF IT, but STILL someone drops a game where, guess what, YOU HAVE TO PICK UP EVERY SINGLE COIN!!!!!!!!!!!!!
Other then that it's a pretty decent game :)