This is super interesting concept with high polish.
Most annoyingly, block movement is quite inconsistent, sometimes blocks are placed on each other and sometimes move through each other.
Level 6 took some luck for a person to be randomly launched upwards just below the star (it happened a few times before, but in wrong locations).
In the level 7 I tried to specifically arrange blocks to make a small gap, that will launch the person to the star, eventually succeeded. I don't see how I could solve it properly (at least with current inconsistent block moving).
Time: 10:35
Are you from USSR?