I rarely write comments, but all these negative comments got me angry. Brilliant work. This is by no means a game that I would play everyday, but the concept and art is amazing.
I don't know if this was intentionnal, but the upgrade/cost ratio is horrible. Your money is always best spent building a new tower (exept for first the upgrade). This seems like an odd choice to me as more towers = more lag.
For arrow towers:
The money/damage ratio goes like this:
0.0667, 0.0726, 0.0675, 0.0616 then 0.0568...
Awesome game, simply brilliant. If I could suggest one simple interface upgrade that would have made my life easier. Having the programming section of the manipulators numbered. Not having to count all your symbols everytime to make sure your sequence works is tiresome. Other then that, best puzzle game on Kong hands down.
I have to aggree with Deathster666, A mass attack (or select a few units then attack) would be appreciated. I love the concept, but it's taken me way too much time to get throught the tutorial because of a slow attacking interface. You could also add an option to make the attack animation instant.
 "Realm of the Mad God"){kind=icon}
 "How to Raise a Dragon"){kind=icon}
 "Go Usagi Go"){kind=icon}
 "Polygonal Fury"){kind=icon}
 "RPG Tower Defense 1.5"){kind=icon}
 "The Codex of Alchemical Engineering - Magnum Opus Challenge"){kind=icon}
 "Bureau of Steam Engineering"){kind=icon}
 "Mytheria"){kind=icon}