Neptune Flux

Note: it's entirely possible that you might beat this game in under an hour. It's a short, story-driven exploration game. None of that is a real negative, but it might take some people a bit by surprise. In terms of general atmosphere, it feels like the sort of game that's typically longer than that, which might take some players by surprise.
For a short game, there are a lot of good things to say! The atmosphere is unique and compelling. The story is interesting. As exploration games go, this one is unusually well-crafted: exploration is outright the entire game.
I haven't personally tried this game on a VR set et, but I suspect it would only improve the experience. Go for it!

Game is a bit too short (~60-90mins) - while I understood what was going on it was on the lower side of explaining stuff. Either more to explore or a stronger guidance through it would've helped a lot.
Also I felt unnecessarily restrained by the battery power. This mechanic did not really add anything interesting to the game and just prolonged it for no good reason.
However I enjoyed it for what it was, I just would've loved it more if there was more to it. Felt like it ended where it just could've started, because the potential is absolutely there for a much longer game. Underwater exploration, mystery, interesting setting, solid controls and voice acting.

Experienced on the Oculus Rift and Windows Mixed Reality
You can view my review & gameplay here:
You do have to use either a gamepad or KBM to play this game as motion controllers are not supported. This is basically a walking simulator where you're in an underwater submarine. You explore the areas around your base. Unfortunately, at the start your range is limited and if you don't get back to base with any charge left, then you'll have to go in for repairs and your money will be deducted.
This causes you not be able to explore fully. It is also quite dark and you can't see very well and the different sites are not marked until you locate them. So the game does start out kind of rough until you figure out where everything is and get a few upgrades. The game features light puzzles that are easy to solve .... once you figure out the order of things. Unfortunately, the puzzles seem impossible until you figure out the correct order to do the quests. This results in some frustration.
The story starts out full of mystery as you find these ancient artifacts and underwater wrecks. However, once the main conflict appears, it is fully resolved within seconds. There are some nice moments as you explore the underwater mysteries. Navigating the sub even seems like an adventure at first.
However, the map is pretty small. The real difficulty is just the darkness, plus not knowing where to go at first, and then not knowing which quest to do first. The game took me 2 hours. However, the game can be completed in about 30 minutes if you know what you're doing.
Overall, I did enjoy the experience, but it was needlessly frustrating as well. I would recommend this game only as a buy on deep sale recommendation. I spent $4 USD, but the $2 lowest price seems like a better deal for what you'll have to put up with.
Sale Price Rating 6/10.

Very short simple game. Recommend purchase when it is on sale. Travel around in a sub finding "stuff" that helps solve a mystery. Nothing too difficult.
Some bits don't make a lot of sense - like the salvage exchange that you don't really need after the upgrades have been purchased.
Overall its relaxing, simple, somewhat engaging. But it is very short. You can finish it in about an hour.

Neptune Flux is a atmospheric underwater story-driven exploration game in a dystopian future. You take on the role of Sarah, an A.Q.U.A. employee trying to keep her mind off of her troubled past while tasked with finding the source of strange energy surges. As you explore the open ocean you'll discover the secrets about you're mothers disappearance. It's a short game but I really enjoyed it.

Nice, story-driven (but very short) exploration game. I played the game from start to finish over a span of about 90 minutes. The game felt more like an atmospheric demo to me. It has a lot of potential for a Neptune Flux 2. $8 is not a bad price for this story.

I backed this game on kickstarter and it seemed a LOT better than this. On kickstarter it seemed like a 8/10, but this is a 6/10 just barely worth playing. I don't like how they don't have a cotroles page in settings because i was confused if i would unlock the ability to use power nodes. Also i did not like the ending either because its very controversial.