Awesome! Keep it up! I keep hopping back on to play!
Can you maybe designate when the 2x has been bought? Or maybe add a 4x,6x...? Dunno if that would work in to your scaling.
The 60s CD on the power ups was a good idea to stop gas farming too much
Happy to hear you like the game.
The text should turn green when bought. If it's not visible enough, I'll find a way to make it more obvious.
Now I'm thinking that gas isn't really needed if there's a cool down.