This document discusses the three main modes in the video game Minecraft: creative, survival, and hardcore. In creative mode, players have unlimited access to all items and can fly, and players cannot die. In survival mode, players must collect resources to craft items and build shelter to protect themselves from hostile mobs at night such as zombies, creepers, and spiders. Hardcore mode is the most difficult, as players only have one life - if they die, their world is lost. The document also provides examples of structures players can build, including a pirate ship with working cannons, castles with stone walls, and a castle surrounded by water and mountains.