I have been in it for a few months and, TBH, I cant get on with it. They are just progressing at far too slow a pace compared to other games which were in a similar "early access" stage (rust, nether, dayz etc).
I see they have recently pinched a few ideas from rust. though, probably other games too, so the extreme slow progress may help to fill out the game a bit, but for me this is just too far away from ready to be worth my time. I just play a few mins after every update and leave underwhelmed. This is more like pre-Alpha to me now, so imagine what it was like a few builds ago when they started selling access.
The inventory is a kind of Day Z thing, but more simple, crafting is ripped off from rust (including hunting, cooking meat on campfires etc), the map all looks the same, animations are horrible. Plus I still struggle with their unique door open/closing thing after all this time.