Pretty good and enjoyable!
Some suggestions:
Add some descriptions to cars, because sometimes it takes a while to figure out what they do.
I think aliens in this game are a bit weird, they just don't fit this game (it's just my opinion).
Your complex UI elements don't fit low-poly style, maybe try simplifying UI or making the models more complex.
P. S.: Can you play and rate my game, please?
Viewing post in TrainLooper jam comments
Thanks, will take your feedback into account. I was a bit limited art-wise because i'm not an artist and solo dev but i totally see what you are saying. Perhaps a more realist approach would fit better. The Aliens were very WIP and meant for a bigger map with more features, i just squeezed them in this demo map.