The creative and building aspects of Minecraft allow players to build constructions out of textured cubes in a 3D procedurally generated world. Other activities in the game include exploration, gathering resources, crafting and combat. Gameplay in its commercial release has two principal modes: survival, which requires players to acquire resources and maintain their health and hunger; and creative, where players have an unlimited supply of resources, the ability to fly, and no health or hunger. A third gameplay mode, named hardcore, is essentially the same as survival, but the difficulty is locked on the hardest setting and respawning is disabled, forcing players to delete their worlds upon death.