Needs more in the way of instruction on how to wall properly... I had to restart the tutorial level 3X times before i gave up trying to play this game... Too bad cauz I love wall building TD games.
Maybe let the player know that you CANT build during waves b4 the 1st wave is started.
Maybe show the radius attack when upgrading from a wall to the tower.
this game needs more work before its ready to play ;\