The whole thing was one giant pre-release beta until this month. I put beta in brackets up there because this was an early access game. If you just want a simple answer that's it, but to indicate why this was, I'll give some background down below. It was spun out into a different library item, rather than a tradional steam beta, so that individuals could quickly hop in and trial it without damaging their world and character on the stable branch. Unstable is the game's 'Beta' channel for testing and active development.
