In Minecraft, players explore a 3D blocky world with virtually infinite terrain, and may discover and extract raw materials, craft tools and items, and build structures. Depending on game mode, players can fight computer-controlled mobs, as well as cooperate with or compete against other players in the same world. Game modes include a survival mode, in which players must acquire resources to build the world and maintain health, and a creative mode, where players have unlimited resources and access to flight.