I just spent about seven cumulative hours leveling 2.2 hectares of land in Minecraft.
I think I may be a little bit addicted to this game.
I am currently mining out a large prism in an underground area. I ran into a cave while doing it, so I'm going to have to cover up all of it when I finish mining the actual shape. I also can't stand to see ores in my tunnel, or the prism, so I have to mine those out and fill the holes with cobblestone. And every time gravel falls down, it raises the risk of water pouring in. Because the prism is beneath a large lake. I just happened to be lucky enough for two of my vertical tunnels to hit each other perfectly, because that's how I'm mining it out. By going around the edges of what's inside the shape, and then doing the opposite of filling it in.