so in single player.... you can....... do what exactly ?
or what i mean is.... whats the point ?
It really is a sandbox. Look it up on youtube for examples of stuff people do.
On the basic level you can play it like lego, go out, collect materials, and then build something with it.
But then you have things like the monsters, you can make weapons and armour, traps as well. The water I think is dynamic so you could dig a mote around your castle and redirect a stream.
Or like in the vid I saw yesterday, you could make a rollercoaster etc.
Its up to you really. What was the point in Blockland? I thought you played that.