I say wait till the game is out of early access. I enjoyed what I played, but unless you only want to build build build build this game wont have much for you as of yet. It takes almost no time to explore all its content and the new content they have added is mostly color pallet changes to building pieces. Depends on your play style i guess. If you only plan on playing around in creative mode building absurdly large bases then I suppose its a good purchase. If you want to explore new areas and encounter new mobs then I'd say wait. They have teased one new creature for the mistlands and its a mob that looks exactly like a deathsquito. Not exactly new content if you ask me.