The core idea was nice and the levels were fun, even if it were only a few.
I especially liked the chill music!
It personally took me a while to understand, that the back-mechanic wasn't an undo since I only read the ingame manual and not the one on the page. I think the mechanic would've worked a lot more intuitive, if you didn't map it to a separate button, but just made it possible to go back vie WASD. Follow back the cable if you want so.
But that's my only criticism. Overall a very nice little game!
Also very cool detail, that you could still play in the finish screen :)