A Spawner Egg is a new item added in the weekly pre-release 11w49a. It can only be legally obtained in creative mode. There are several different types of spawner egg, each type spawning a different mob. A mob is spawned by right-clicking on an empty space while holding the egg.
There is a spawner egg for certain mobs only;
| Spawnable Mobs | Creepers, Skeleton, Spider, Zombie, Slime, Ghast, Zombie Pigman, Enderman, Cave Spider, Silverfish, Blaze, Magma Cube, Pig, Sheep, Cow, Chicken, Squid, Wolf, Mooshroom, Villager |
| Unspawnable | Snow Golem, Spider Jockey, Enderdragon |
Trivia
- There are good explanations for why the unspawnable mobs cannot be spawned. A Snow Golem can be easily created, a Spider Jockey is not a separate mob as such and Enderdragons are not supposed to be spawned other than the one in The End(and could easily be used to grief if spawned in other dimensions).
- Eggs look very similar to the eggs in Pokémon games.
- Charged Creepers could be considered a separate mob, yet they are not spawnable.