This game is really fun! I've been having a blast trying different combos of towers. My current favorite combo is (Lightning/Lighting/Flame/) and (Ice/blank/flame). I really like the idea of using towers that can only attact in specific directions, makes seem like your building around the maps geometry instead of on it.
Some bugs, feedback and ideas to toy with.
(Note I was playing on web version but since I can't find a change log I have no clue if these are fixed/added or not)
Bug: On 1-4 the challenges seem to be incorrect. No ice towers actually was no auto lock and no auto lock was no leaf.
Bug: On maps with lower towes, the boost tab of the tower often gets cut off.
Bug?: Fire effect gets rid of damage of the weapon, leaving only the burn. If this isn't a bug, please specify in effect description.
Feedback: Add a "quit to map" button somewhere on the screen, during my confusion with 1-4 I frequently had to speed up my death.
Idea: Damage numbers, might at a visual crunch to it (though some would prefer it to be off)
That would explain the confusion. Also I checked, esc doesn't seem to work either. Seems like it needs the settings button on screen to work but I'm no coder.