Single player is just survival and Multiplayer worlds can be created. It's not something I was ever interested in, until I just wanted to model something in 3D and other programs were not as simple. Minecraft seemed like the easier option, but when you really get to learn how to survive, it is farm building, but also survival at night. Monsters come out and destroy you and your base if you aren't super careful. A bed will help you sleep through the night but you have to find and shear sheep.