And yes, it is early access.
As far as I played so far, there are two moons to explore, but other worlds also listed on the opening map which I assume will be introduced at a later date.
You are asked to create an avatar, and to choose from 4 classes, Scientist or Ranger, Marine or Engineer, customize colors and features, select your stat and your skill points,name it,select the server, then you can start.
The multiplayer is there but the public servers seem sparsely populated. I reamined in single player mode.
The start finds you crash landed on desert sea not far from an island of rock formations and ridges, the visuals are well done and I immediately thought it could be Arrakis, from Frank Herbert’s Dune. Scavenge parts from your ship, head to solid rock and start collecting resources. Water and shelter are your most urgent need.
I will warn you, like Ark, you need eyes in the back of your head, and the two biggest foes you face are the Skellapods and Crab monsters. I prefer not to restart games if I run into trouble, but in the first 3 hours of gameplay, I had to respawn at LEAST 30 times. Depending on your class, the tools will vary, and even the charge gun you start with lasts only a scant 12 charges.