Well, at first I thought that the idea is that you place turning command things and that's it. Then I saw a cool idea of placing not only turn commands, but also walls, and that was clever. The thing about Ctrl-Z'ing stuff to place it somewhere else amazed me.
I love how you introduce these concepts gradually using level design.
I love the mechanics you've come up with here. I think if you do some work with graphics and sound design, it'll become an amazing puzzle game (I mean, it already is, but you get the point).
Excellent job!
P. S. I think this game should have gotten more ratings.