what you've failed to mention is that that was posted on a anti-pewpewdie video
Let's keep that discussion out of this topic, we have had this before in a separate topic just for that.
Anyhow, i think Blockland will do just fine.
Aside of that, the people you guys mentioned only do games with a set story or when it is already pretty popular.
A sandbox game is really hard to do what these people do.
Minecraft is different because that is a survival adventure game, Blockland has it's origins in building.