From Minecraft Wiki
Not to be confused with Despawn.

Spawn is the term used to describe when an entity (either a mob or player) appears in a Minecraft world, seemingly "out of thin air."

This term should not be confused with the game mechanic known as despawning, which works oppositely.

Mob Spawning[edit | edit source]

Passive mobs such as cows, chickens, and pigs spawn naturally during the day, and can only spawn on grass blocks illuminated with a light level of 9 or higher (mooshrooms spawn on mycelium blocks instead of grass blocks). Hostile mobs spawn at night, and can only spawn on blocks with a light level of 7 or lower. An area can, therefore, be kept free of monster-spawning by illuminating it to a light level of 8 or higher.

Most mobs can be forced to spawn in Creative Mode by using spawn eggs, although some can be spawned by building certain structures in a certain way in any mode (ex. Iron Golem, Snow Golem, and the Wither).

Player Spawning[edit | edit source]

A "spawn point" is typically the term given to the location where a player respawns after death. All players who enter a Minecraft world for the first time appear in precisely the same location in the Overworld. All features in a world are gradually generated outwards in all directions from this point, as players explore their surroundings. Until a player sleeps in a bed for the first time, he/she will respawn at this initial start point each time they die. Sleeping in a bed will reset the spawn point to the bed itself. Sleeping in a different bed will reset the spawn point to the latest bed a player has slept in. However, if the bed a player last slept in is destroyed, they will spawn back at the original spawn point in the Overworld.