Now THIS is one hell of a good demo. It's impossible not to compare it to Iron Lung (due to it being a submarine game where you can't directly see outside) but this took what was already a stressful concept and made it even more tense and stress inducing. I got fairly overwhelmed at first by the sheer complexity of the submarine but after getting the hang of it, it became extremely fun to pilot the sub around (though still tense of course thanks to some pretty great sound design). Honestly, the only thing that could make this even better than what it already is, would be to have proper voice acting. In fact, I would love to do that and help on this project, no payment needed, this is just an amazing game that I think deserves a lot of support (plus, I can imitate Siri's voice quite well so I think I could do the voice of the ship's AI). Seriously, you've got something amazing in your hands here, so much potential and I'll definitely be getting it on Steam once the full game is out! Keep up the amazing work!