I passed the Windows version of the game. I really enjoyed! But I would like more levels : ) However, the existing levels are amazing. In the 16th level I found a bug, attached a screenshot, on it the player’s block is in the wall, apparently there should not be a wall (by the way, you can pass through this wall in one direction, but not in the other). Perhaps without passing through this place it is impossible to pass the level. After passing through the 20th level, by the way, for some reason, it is closed in the level selection menu.
Have you come up with this concept? He is genial in its simplicity. I have never seen this type of game, if you invented it - you are great fellows!!
I have ideas for new elements and features, if you are interested, look in this online google document.
Thank you very much for your game, it is wonderful.