Minecraft wiki entry for Mineville, associated text: In "Skyblock" players start on a tiny island in the sky, with a cobblestone generator, a chest, and a tree. There is another island nearby where you can get to the market. At the market you can buy and sell items for "Skybucks". In order to play on skyblock, you have to pay "Minecoins". You can also play with other people, as long as you both pay.