These are just a few suggestions:
1) Instead of having the scrolling frame on the right. Use either buttons or create a secondary page that will allow you to go research. This way you can expand the buildings without having to worry about the research getting into the way.
2) Add music. It is beneficial to the player to have some type of SFX.
3) Instead of rounding up the amount earned, round down (for dollars per second).
Otherwise, 5/5, good work :)
Thank you for an amazingly addicting game. Even though my progress reset, I actually had no issue with it! For once, I don't mind restarting on a game, simply because it timed perfectly with your update! I started exporting my data though. Amazing work, and after your last message, kudos on the amazing "amateur" code. The bigger companies can take a few tips from yours!
I definitely enjoyed the music, but not the game. I have never seen a game lag at 100+ fps. Especially "love" the I'm running fast, oh sudden windowed building with the WINDOW at the bottom of a high platform. :( 1/5