I'm learning today that I'm really bad with geometric shapes. This was my best, and most attempts weren't even close.
The challenge is definitely in lining up with the opening rather than picking the right shape (I really only think to mention this because I just played another similar game where I had the opposite problem.)
Judging whether I'm going to hit the side of the wall or not is far more difficult than I feel like it should be, but I know that's a problem with my skills and not the game.
Aesthetically everything is very, very grey. Which certainly works for a dystopian monochronistic world, but perhaps the player could have more colours since they're the last remnants of the older, more creative world. Each shape could be their own hue. :)