I downloaded this and then ran it with a mini web server (python -m http.server), but I had to modify the page a bit because it was tiny!
Once I figured out the controls (or rather, how to get to the button for controls so I could figure out the controls), I managed to get the alien to move around, but the game runs very slow (tried Firefox and Chrome). I couldn’t figure out what I was supposed to do, other than avoiding the human’s green auras. Definitely needs some info on the Itch page to describe what the objective is (I’m assuming it involves getting my spaceship fixed) and how to complete that objective!
Still, good job getting something done!