A lone colony on a small planet

You have been given a mission. You need to purify a small planet, so we will be able to colonize it.
It is rich in resources, so it shouldn't pose a big problem for you.
We believe in your management skills. Good luck.

I made this game using Pico-8 which I feel is a perfect tool for game jams.
For those who don't know, Pico-8 controls on web exports are:
* Arrow keys - D-pad
* Z/C/V - Button O
* X/V/N - Button X

Web version
GitHub repo with source
Also available on Splore