Got obsessed with this game, so I made a shameless PICO-8 clone of it with some flavour of my own.
https://spoike.itch.io/rymdhulken
It keeps the overwatch and also adds a feature of letting the squaddies form a line, which speeds up the game a little bit. It is a playable demo as in a Work In Progress with some more features I want to add in it (hopefully without running out of tokens in PICO-8).