i have to apologiye for the dev because i asked why not to put a target selection on towers and after that while I was reading a lo of comments I saw that he already answered that by saying that it would break the balance of the towers. Sry. Keep doing the good work!! (you must be tired to say that some upgrades dont work on challenges from what i saw on the comments xD)
Extremely well planned game, i liked it a lot, and rated 5/5! Just repeating some things that I support to add to the game: target selection for the towers, so that you can make more strategic plans for each turret in each location, rewards for achievements (just a natural thing in games), and a speed up button wich is always good at Td games, tough I wouldnt use it a lot since its kinda hard to keep up late game without the game knowledge. Either way, GOOD JOB IRONHIDE!!
 "Pandemic 2"){kind=icon}
 "Kingdom Rush"){kind=icon}