A fun little puzzler. I haven't finished the last 2 levels, but the attention to the design of the background and 90s 'futuristic' aesthetic (and plesant enough soundtrack) perfectly hits the mark for providing a simulated retrospective experience. The visual reminder of keys on the screen was great too. But perhaps one might also include a reference to the reset key? I don't remember seeing it on the screen. Had to check, it by resetting the game when the levels started getting challenging.

The look and feel is seriously so uncanny, that I start to wonder if this game was ripped from something in a bargain bin of old clearance stock! I know you worked very hard on this one. So, well done. Very well done!