A nice little idle game, though I noticed two things.
1: Having to clear out every fight to get more population gets a bit tedious, and makes growth rather slow.
2: If you toggle off and on the fights, your HP stays the same, while the enemy's stays where it was. Sure, it's nice to exploit (if this was unintentional) due to my first point, but I doubt it was intended to work like this.
It's such a fun game, and I enjoy the upgrade system quite a lot. But the balloons are just too unforgiving, causing more rage than enjoyment as I find myself rocketing into them most of the runs. The same thing goes for the springs, as they seem to kill your height if you land on them with high speed and altitude.
I don't get why so many are complaining about the use of bloonstones.. Sure, you can buy them through micro transactions, but I started yesterday and have aquired 1000+ without spending a dime.. I find it to be well balanced.
 "Trimps"){kind=icon}
 "FHS idle (Alpha)"){kind=icon}
 "Curl Up and Fly!"){kind=icon}
 "Sim Apocalypse"){kind=icon}
 "Bloons Monkey City"){kind=icon}
 "Idle Necromancer"){kind=icon}
 "Magic Barrage - Bitferno"){kind=icon}
 "Idle Mine"){kind=icon}
 "Earn to Die 2012"){kind=icon}
 "Arcane Weapon"){kind=icon}
 "LRD: Rebirth"){kind=icon}