I LOVED the concept of this game as a whole. I'm always into brainteasers like that! One thing I'll mention is maybe disable the space bending for the very first level as I tried to cheat the system and bring the flag over but it hid the flag and I didn't know how to undo it hahaha. The 3D mechanics adds a lot of depth (no pun intended) to the mechanics and the mental exercise you have to do to find the solution! I will say though, some of the levels, specially the ones with the boxes could be explained a bit better, I couldnt find a solution to 10 and 11 as the boxes would get stuck in the walls and I had no idea what else I could try there. I believe the difficulty curve could be solved by easing the player into new mechanics introduced in more straightforward levels, other than that its up to each player's individual capability of visualizing the solution