Fun and unique take on the theme, and in my opinion quite well executed.
At first I thought grabbing objects should be more snappy and consistent, but after playing through the hard mode I realized there was a lot more nuance to it. It really matters that you use the push and pull in conjunction to put things where you want them to be in that mode.
I usually ignored most upgrades besides the blue resource generators and shields in a pinch. Things spawning inside other things is a bit of a bother, but there's usually more than enough spawns to get on with it (unless you're unlucky).
Loved the art and the choice of music fit as well!