This is cool! It's like a puzzle version of space invaders. The integration of the classic arcade style with the activation system makes for a very engaging design.
It took me a bit to adjust to the slow movement speed, but I like how it prioritizes foresight over reflex, you really have to anticipate.
The art has a very nice "colorful. but downbeat" vibe; it meshes well with the setting.
That boss fight was great!
Great job!!