In order to use helicopters you need to have/build the correct building. In case you already have it, you need to buy helicopters (the same way you buy trucks). Once you've done all of these you use right click to send helicopters and left click to send trucks. Notice that sending helicopters is more expensive than sending trucks.
The "Packs" and "Buildings" tabs when I open the Shop are not working for me. When I click on them they show nothing, just stay blank as if they were loading. This has been happening to me since 1 or 2 weeks ago.
Awesome game but I totally agree with top comments... fix the repair thing... make it proportional to the damage taken and not to the whole tower's price.
Howcome are there some people complaining about this being a point and click game when in the description it clearly says "Point and click adventure... " In the freaking 1st line!!! If you don't like this kind of games then don't even try playing it!
What's with the scientist that asks u for a lab and then for a volunteer to go inside with him??? I already repaired the heli, created the constitution, reclaimed the whole map (huge) and that guy is still inside doing... something... been clicking "end day" for a while now just to see if he comes out but nothing... I'm already at day 208 and that dude is still locked in :/
What does he say/do when he comes out? Does he ever come out?
Killing the guards would take away the strategy and patience involved in playing this game... If that was to happen, then we all would go for the guards 1st and then for the target, making it a lot easier and less challenging.
 "Building Rush 2"){kind=icon}
 "Apocashop"){kind=icon}
 "Jungle Wars"){kind=icon}
 "Soccer Physics"){kind=icon}
 "Kingdom Rush Frontiers"){kind=icon}
 "Caribbean Admiral"){kind=icon}
 "New Star Soccer"){kind=icon}
 "Epic War Saga"){kind=icon}
 "The Light Temple"){kind=icon}
 "Defender's Quest (lengthy!) Demo"){kind=icon}
 "Bullet Time Ninja"){kind=icon}
 "Hacker vs Hacker"){kind=icon}
 "Pirates of the Undead Sea"){kind=icon}
 "Rebuild 2"){kind=icon}
 "Epic War 5"){kind=icon}
 "Protector IV"){kind=icon}
 "Ultimate Assassin 3"){kind=icon}
 "Epic War 4"){kind=icon}