Classic concept with nice puzzles, nice difficulty curve, but i have some suggestions:

1. Use a different background color and make the graphics overall less "unity-like". Nothing wrong with it, but i think that would look better and more polished.

2. Add music.

3. Maybe you could get more people to play your game by using actual footage from your game with a bit of font and stuff as a thumbnail. 

I hope the feedback helped you, would be nice if you could check out my submission too. :)

Love this! Would be great to have some music, but it's still a really solid entry. Congrats :)

cool game! interesting puzzles and a simple concept that got explored quite well. some art/music would have been nice but it didn't detract from the experience too much

Amazing job. Excellent level design had tons of fun GG!

Simple good puzzle game.

Simple, clean concept and some nice puzzles

Really nice concept. Got stuck at the 4th puzzle and took a while to solve it so that was a lot of fun! Maybe a little music could be added and this could be a really fun game!!

A very simple and very fun puzzle game