NIce idea. More game mechanics would be great - e.g. being able to place rods to stop the compactor a little to get all the stuff. Also motivationally speaking it is slightly unclear why one click the garbage away in a compactor that would compact it nicely. So changing that to saving some liveforms would probably more plausable ^^.
There is a pole you click on to rotate that does stop the compactor. And yeh thanks for the idea I never thought of thatill update it with little aliens to save instead of garbage. Think of them as droids then if it makes you feel better lol. I will update it when I get time
Some small things that kinda bothered me though was the lightning, shapes are now hard to see since most of the field is shadow.
Also, the upgrades menu is not really clear what is your money and what you are buying.
Other than that, very neat game! :)