Okay, cheated to get to the further layers, and the game quickly degrades from barely playable to glowing hot nuclear garbage...
The system for buildings and powering up needs massive reworks to not make the game WORSE!!!
On top of the cost increase being a huge black hole that needs an insanely massive change on its own!
On the plus side, if things are properly adjusted, it does have the potential to be a rather entertaining game. (assuming the increases are multiplicative and not additive)