I'll be honest, the controls of the actual submarine aren't very intuitive and are kinda touchy. The screen also could be zoomed in at times when you're not interacting with objects and the cockpit darkened so you could see outside a bit better. But with that out of the way, this game has great atmosphere and the controls all being 'in-world' adds a massive layer to the immersion while also being a very smart way to keep HUD to a minimum. Audio is very good. Loved your entry overall.