Excellent game
The game is excellent. The concept of 1 bullet = one kill is one of the key elements that makes the bloons series very very addictive (with the occasional exception of the ZOABs). That and the fact that monkeys throw darts at balloons just because... well they can :)
However, some pointers as to how I think the game could improve (The game is still great ;) ):
I'm definitely missing a lot of possible upgrades. Such as wingmonkeys, a type of mine that explodes when in contact with a bloon, spiked catapult darts such as in BloonsTD 4 etc.
Make it possible to replay old levels to try and get a higher score.
A Sandbox mode would be greatly appreciated.
Its dissapointing if you upgrade your 4 darts to laser eyes just to find out ur barely killing more bloons cuz u lost two darts. The last laser upgrade is also worthless cuz Im actually killing less bloons with the last one compared to the 4 laser one.
The upgrades should also be manually activated, not by touching them. Allow supermonkey to pick them up, activate them with spacebar. I tripped over sun god upgrade just when there was a quiet part in the level :(
Im looking forward to a sequel on this game :)