Spawn

The World Spawn Point is where players appear in a newly created world or when joining a multiplayer server. The world's spawn point will be on a surface within five blocks of the horizontal middle of the world. It will almost always be located in either the Forest biome or the Snow biome, as more hazardous biomes cannot appear at the world's center.

A player's Spawn Point is initially the world spawn point, but can be changed by crafting a Bed, placing it in a house and pressing the button on it. The spawn point is where players respawn after dying, and where a Magic/Ice Mirror or Recall Potion will teleport them. Once the house the bed is in is broken or on the bed is pressed a second time, the player's spawn point reverts back to the world's initial spawn point.

The world's spawn point is marked by a green arrow icon on the minimap, and the player's spawn point is marked by a  bed icon.

Tips

 * It might be useful to build a shelter over the world spawn point so that the player is provided a minimum of safety if they happen to respawn at the world spawn point, like when the set spawn point is inadvertently reverted back to the initial world spawn point. Similarly, it should be avoided to dig directly underneath the world spawn point, as players respawning there will inevitably fall down.
 * It is possible, though extremely rare, for the player to spawn on a Floating Island. If the player's spawn point does happen to be on a Floating Island, it is highly advisable to use the available blocks to create a staircase to the ground. If the player is lucky and there happens to be a Lucky Horseshoe in the Skyware Chest, then it is possible to equip it and jump down to the surface, taking no fall damage. Alternatively, you could just regenerate the world.
 * It is possible to move the world spawn point up by a maximum of 30 blocks by filling it in. Going higher than 30 blocks will simply break the blocks and teleport your character to the original spawn, however.

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