I've seen a few games like this throughout the jam now. What I haven't seen is such excellent puzzle design. The use of tight spaces to limit player choice from the absurd number of options you'd have an an open 3x3 space is a great call. You slowly guide the player through escalating puzzles so they have a chance to adjust to the unusual thinking required for this sort of puzzle. Well done!
And it helps that your presentation was very pretty. Good job and keep making games!