The game is fun, I really like the idea of a shooter from a bird's eye perspective. The alien designs are cool and the upgrades are interesting! I like the rouge-lite difficulty ramp up and upgrade system.
The game doesn't really fit the "glitch" theme of the jam, and doesn't make an attempt to include it, so possible disqualification? Sorry.
As for the gameplay, I think that making the fire button a keyboard control rather than a mouse input would be a better choice given that you use the keyboard for all movement. If the game has a reload mechanic, you should add a button that allows you to manually reload instead of having to wait until you run out of bullets. I think there should have been some upgrade for more damge sources (Maybe a low-damage turret you can mount on top of a base, or on the nearby ground, or an alternate weapon you can use on the satilite in conjunction with the base bombs). And lastly, please anchor your UI elements, I've made the same mistake before, but if something needs to be visible then you need to anchor it so it stays on screen regardless of the screen resizing.