Cool stuff! Really liked the lighting when the saucer was overhead.
If you're looking to squash bugs, the first time I played I got softlocked outside when I closed the door after looking at the saucer, and I couldn't get it to open again. Also, the first time the alien ran past the window, he was sideways; not sure if that was intentional or not.
Nevertheless, good work! It seems like you're planning on fleshing this out more; I'm excited to see what you make. Keep it up!