I don't think there's someone who still hasn't played this game. But in case there is. Buy it, play it. You'll love it and you'll lose a year of your life on it.
Don't even think about it. press the buy. now.

TLDR: This game as a lot of potential. But plagued with a lot of inexcusable bugs, and from the current way of things, it seems the creators care more about lining their pockets with more money than actually giving players who already bought the game a whole while exprience.
WAIT FOR FULL RELEASE AND THEN DECIDE WHETHER TO BUY OR NOT.

A great game, but suffers a lot from "pre-alpha" problems. Looking forward to when this game fixes the problems and released a full game. Just hope it'll be sooner rather than later.
4 million copies.. Sure means they have enough money to make it happen quickly.

EDIT: With the introduction of micro-transactions I am forced to change my review to currently "not recommend" this game. Wait for full release if one ever comes.
The current update and introduction of micro-transactions speaks badly on my mindset of the creators. Money > customers. Pain and simple. I read their logic about wanting to fund the eSport event and that's why they brought the paid crates. BS.
Even if you feel forced to add paid content already in the alpha stages, there's a way to go about it. And the way they went is the absolute opposite. They could've made it so you'd just get nicer things faster by paying. Or perhaps able to choose a specific garment. But adding all those barely nice skins as paid content while keeping the "free" base with simple crappy skins. That's a slap in the face to all of us who paid for the game early on.

Add to that the fact the game still suffers from many of the same bugs it had when I originally wrote this review. And it all just adds up to a game I don't see as worth buying. Not until I know what i'm getting as a full release. "Early Access" can no longer be an excuse for the way their handling the game.

Suprised I never wrote a review for this game. Thanks for reminding me, Steam.
Hands down one of the best games I ever played. An intense story that keeps you interested and caring till the very end.
It plays like a great sience fiction novel, exploring an idea we'll probably need to face some day in the future. Don't want to spoil anything, so I won't get into any details.

But if you like a good story, you'll love this game.