I really like the simple concept of this game and I enjoy the music rather much.
I thought I should let you be aware of a glitch though; you can force yourself through northern walls by repeatedly deploying and destroying those little bots in quick succession. I coincidentally found this out in the second puzzle zone when trying to reach the entrance to the next puzzle. The bodies pile up and forcibly push you out of the wall and there's no way to get back from it unless you reset.
Reviews for "ABC"
An extremely creative and original idea.
Excellent showing. And so much meta.
I liked absolutely everything about this game. Especially atmosphere.
Very well executed, original and meta.