This is actually a really cool concept! There's so much you're able to do with those few simple rules!

As someone had previously pointed out there's a bit of a difficulty imbalance, but outside of that you've got something really cool here!

I'd love to see this develop further in the future!

The idea of using a few simple mechanics in a variety of different levels was actually kind of interesting.
The levels felt kind of random though and the difficulty all over the place so I think having some kind of progression could have been nice.

Everything else is also a bit minimal, which I understand might be part of the aesthetic, bit some simple music, or a nicer menu could have made it feel more like a finished product.

I'm getting a no cart found! error.