There's something funky going on with the rounding of numbers to quintillions and quadrillions. Not exactly sure what, but I think there's a discrepancy between the Cash On Hand field and the Upgrade Costs. I had 2.xx quintillion in hand but the Imported Ice Cubes (2 quintillion) upgrade was unavailable until I had somewhere around 3.00 quintillion.
This game has some issues. It's a lot of fun, but I cannot figure out how to replay previous levels. This means that I can misallocate skill points, building myself into a skill tree that literally cannot beat the current level and cannot advance the game. Further, the different abilities need some description as to their function. I'd also like to see what separates different units. Is it simply done by damage/$ or do some of them have different hidden statistics like speed or armor?
 "AdVenture Capitalist"){kind=icon}
 "Ninja Mafia War 2"){kind=icon}
 "Hardball Frenzy"){kind=icon}