i've made a classic mob farm using a zombie spawner in 1.11 and whenever i get 30+ mobs in my dropzone they just die when new ones come in, it's like they're crushing eachother.

any way to fix this? water doesnt work, an extra drop layer using a piston doesnt work either...

Height doesnt matter, they die anyway if there's more than 30 ish ... this way i can't idle for XP anymore...

  • This is actually a new gamerule of 1.11. I'm not sure if we've found a way to fix this in vanilla mob farms other than to disable that gamerule – Unionhawk Dec 3 '16 at 23:03

Suffocation is a new game mechanic that was added in 1.11. From the Minecraft Wiki:

  • maxEntityCramming
    • Defaults to 24.
    • If one entity tries to push more than specified number of entities, it starts to suffocate.
    • Gets damaged 3 hearts by tick; passes though armor.
    • The death message is <Player> squished too much.
    • Setting to 0 disables the rule.
    • Affects all entities.

Basically, when there are more than 24 entities touching each other, and they can't move, they take damage. This essentially nerfs a lot of farms where lots of mobs are in the same area.

If you want to turn suffocation off, use the command (you will need cheats)

/gamerule maxEntityCramming 0
  • 1
    @GarlicDog you should make this "the answer". Please – Orphans Jan 1 '17 at 9:44

This is actually meant to be in the game it is not a bug, I think that it kind of sucks too but it is there.

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