Space key sometimes works for jump, but not always? Made it feel buggy. Faster reset for the cog puzzle, it felt like mostly a guessing puzzle, so a quick reset would be nice. The cutscene scripting seems solid, and the timing/motion feels right. Some dialogues are too long. I'd prefer a normal third person camera movement with RMB, or at least change MMB to something less painful/more natural to use to realign the view.
But pretty good overall! I was a little disappointed there wasn't more content because I remember seeing other environments being posted. But its got movement, cutscenes, dialogue, puzzles.. you could definitely make this into a thing. Also the character design of the aliens looks nice. Got a copyright claim on the music