the amount of cash i am receiving per second is about half of what it should be when i am online. you may want to look into that, it doesn't seem to affect the offline rate.
This game is great! I think that you need to remove the Kred stuff though, increasing the cost of new routes would accomplish the much more and keep people playing for longer as well. i also like the idea of increasing the durability of the planes to allow for longer playing sessions.
this game was fun. i completed the game in 39 days but didnt get my badge... though ok maybe i needed to buy all the upgrades, kicked boos to grave 6 more times still no badge... otherwise great game.
 "AdVenture Capitalist"){kind=icon}
 "Aviator"){kind=icon}
 "My \"Dear\" Boss"){kind=icon}
 "Desert Escape"){kind=icon}
 "Paper Plane"){kind=icon}