A nice version of a time limited incremental game. I found the start quite slow, but the game hooked me enough to play through to the end.
I managed to sustain a run in the penultimate level which gave me enough cash to buy every remaining upgrade prior to trying the final level, and the jump in efficiency felt hugely satisfying. Though this may not have been the intended way to experience the game.
The tether and dash upgrades add to the experience by giving the player more options, but I found generally that I'd rather save my Energy than use the dash, until the final two levels where my upgrades were advanced enough to do as I pleased.
Given that the game is primarily controlled by mouse position, it would be helpful to confine the pointer to the game window when it's in focus.