The daily challenge list has become broken for me, now when I click on previous challenges the list just goes Nov 2012 with no way ti see more recent ines
you might want to introduce some randomness to when the tanks fire, because at the moment if you have lots of tanks as soon as an enemy spawns, all your units just instantly go BANG!!!!!!!!! which can be a bit annoying
So I'm probably among very few who got every achievement in this game, and for those who are wondering the final upgrade is unlimited fuel and durability, but what I REALLY wanted was a no obstacles mode!
 "Bloons TD 5"){kind=icon}
 "Ultimate Tank War"){kind=icon}
 "Into Space 2"){kind=icon}