Data Packs Other

Real Mob Sizes! (1.21.1-1.21.11+)

  • 7.3k views 2 today
  • save_alt 1k downloads
Compatibility
Minecraft 1.21
Changes include
    Added CreditResearch credit linked in datapack files
    • 20
    • 17
    • 11
    PizzaBombz
    Lvl 41Master Dragonborn Necromancer
    28
    Make the mobs in your world the actual size they are in real life! Spiders become tiny, horses become bigger, and much more!

    This datapack currently supports versions 1.21+. It has last been confirmed to work in version 1.21.11

    Want to see me play this datapack? Check out this video!
    https://youtu.be/5BKXxkQYCnM?si=HTzBfbXSJjc4UsMO

    Before uninstalling, or to disable this datapack, please run the command "/function realsize:deactivate" so that it shuts down properly.

    4 Update Logs

    Update #4 : by PizzaBombz 02/14/2026 11:03:56 amFebruary 14 @ 4:03 pm UTC

    - Now declares itself into the DPDeclaration scoreboard under the name of "realsizes"
    > This enables it to have more easy compatability with other datapacks, clearly stating if it exists or not
    > Because of this, in the future, please run the command "/function realsize:deactivate" before uninstalling or instead of disabling it manually so that it shuts down smoothly
    - Now properly disables itself when certain other incompatible datapacks exist
    > "Fake Mob Sizes!" (under the DPDeclaration name of "unrealsizes") (located here: www.planetminecraft.com/data-pack/fake-mob-sizes/) incompatability detection has been added. This detection exists in both datapacks, and the last datapack added (if not added simultaneously) will disable itself
    LOAD MORE LOGS

    More like this

      Have something to say?

    Janss_33PL
    02/15/2026 7:42 am
    He/Him • Level 42 : Master Musician Dinosaur
    yoooo
    2
    Ona_33
    01/08/2026 10:05 am
    She/Her • Level 40 : Master Artist Witch
    It's crazy idea! But it is cool.
    2
    fmos
    01/07/2026 4:06 am
    Level 1 : New Miner
    this doesnt seem to work anymore
    1
    PizzaBombz
    01/08/2026 12:19 am
    Level 41 : Master Dragonborn Necromancer
    Which version are you on? I'll look into the problem and try to patch it
    1
    connorwanner1
    07/15/2025 3:15 pm
    Level 9 : Apprentice Miner
    make one with phones! ...please
    1
    nekoiscool
    11/02/2024 11:56 am
    Level 14 : Journeyman Cat Fish
    Very cool datapack you made!
    1
    Ubsje
    07/26/2024 8:36 am
    Level 21 : Expert System
    Cool! I started making basically the same thing a while ago, but never finished it.
    My version had a bit of randomisation so all similar mobs have a slightly different size for a bit more realism. I also made squids have a small chance to turn out huge like the real life giant squid.
    Maybe you could implement a bit of randomisation as well! I did it by giving the entities a random score value using /random and then made a lookup table function that takes that score and sets the mob's scale accordingly (because you cannot really write scores to attributes easily).
    2
    PizzaBombz
    07/26/2024 10:02 am
    Level 41 : Master Dragonborn Necromancer
    That's a solid idea. There's quite a few animals that have a pretty large range of sizes they could be and I could go through that.
    1
    Elfeen
    07/25/2024 10:07 am
    Level 1 : New Crafter
    Good idea, but curious how this gonna get 1.20.4 compat, if the scale attribute which changes hitboxes is only avaiable in 1.20.5-1.21.0?
    2
    PizzaBombz
    07/25/2024 11:50 am
    Level 41 : Master Dragonborn Necromancer
    It's only 1.20.4 if they have the "1.21 update" additional add-on added upon world creation, which makes it effectively just a downgraded 1.21. Good question!
    1

    Welcome