Simple and fun, it has potential!

Nice and very hard game.(I suck at puzzles). The only feedback I would give is to add sound as just one moving sound effect or a quick track in the background would be really nice!

Very fun I liked it a lot.

Nice idea. Feels good. Personally I wouldn't add the fruit models. It is clean and elegant like this. If you plan on working on this more then just work on the difficulty progression / maybe add some more mechanics you can play with to create interesting puzzles. E.g. movable rails, no wrapping, color walls (you can't move colors through those / the rails block)

Really nice! I liked the simplicity and the puzzles... It really felt like I was playing with a rubix cube! ;D