This is one of the most interesting concepts I've seen in a puzzle game. It definitely offers a lot of play and fun puzzles. The gimmicks in each level really spice things up and complement each other well. The graphics are simple, but the presentation, with that screen-bending shader and the effects are really well done.
The 3D levels add a LOT of complexity. Thankfully, the game provides plenty of options and assistance for navigating the 3D environment, like a free camera and that stuff. However, I personally found them quite difficult, as I often struggled just to locate myself in the 3D space. I prefer the simplicity of the 2D levels, which are much easier to understand without losing the game's core dynamic. That being said, the 3D levels aren't bad at all. I was impressed when I realized that such a great mechanic could also work in 3D, and the creativity in the puzzles was top notch. However, after the first few puzzles, the 3D sections slightly broke the pacing for me.
Overall, it's a pretty good game. The main mechanic is well executed, and the presentation is solid. I don’t play many puzzle games, but I had a great time with this one.