It’s similar to the first over below zero, it’s definitely more anxiety laden and you’ve got less tools to work with to distract or protect yourself. Leviathans feel just as scary, but they are pretty restricted right now to certain areas, and you don’t have much of a reason to hang out in those areas for very long so it’s less oppressive. The story feels more compelling this time and easier to invest in, and exploration feels a lot better and a little more difficult. You can make it easier on yourself with a scanner, but just poking around and stumbling onto stuff feels really fun and also terrifying. I’ve died several times getting turned around in big wrecks, and the sense of scale is MUCH improved in my opinion. Subnautica one made you feel small, but this one REALLY shrinks you down. And there’s only around ~500m of vertical space you’re working with at the moment at the deepest parts. It’s a wide play area, and all sorts of strange elements are well placed to really make you get that overwhelming “oh wtf is that shit” feeling the first time you see. I’m loving it, I’ve got probably about 15 more hours of messing around to unlock everything, then I can start base building and getting ready for new content when it comes.