Just finished playing and I think that might be the most immersive VR game I've played to-date. The machines all are responsive and all the buttons clicky and actually do something.
Since much of the game is controlling things via in-game screens, the immersion is deeper since you kind of can only hold so many levels of disbelief at once. So, it feels like the things on the screens are a game, but then you look up and around and you're still in the submarine.
Awesome. I can't wait for the full game!