Been in the alpha for a while. The game isn't bad, but don't bother for another 6 months at least. There just isn't really any content right now. The basic frameworks are there of resource gathering and building construction, but it's completely bare bones. Like, unless they've made a colossal update in the last month or so, the building is limited to floors/ceilings/walls/ramps essentially, and the resource gathering is just hold mouse 1 on rocks/wood/animals and hope to not get murdered by someone else while doing it. It does do some interesting things with structures being destructible and having your character remain in-game asleep when you log out, but for now all that means is someone will teleport in to your house via hacks and take your stuff while you aren't online.
It could be a good game once it nears a real release, but unless you're an absolute nut for the survival/pvp genre I'd pass for now.
Oh, and yes, penises everywhere.