Giant Mob Events

Every few minutes, a random mob near you grows into a GIANT. Survive it, slay it, get paid.

A tiny vanilla data pack for Minecraft Java 26.3 — no mods, no resource pack, works on singleplayer and servers.

What it does

Every 5 minutes (changeable) the pack picks a random player, finds a random hostile mob 6–48 blocks away and makes it 2.5x bigger: 3x health, +50% damage, knockback resistant, slightly slower, and it can step over full blocks.
Everyone gets a chat alert ("A GIANT Zombie has risen near Steve!"), the player nearby gets a big red GIANT! title, a roar plays, and the mob glows for 90 seconds so you can find it.
Giants never despawn on their own, and at most 3 are alive at once (changeable).
Slay a giant and you get +100 XP plus a bonus drop: emeralds, iron, bottles o' enchanting, golden apples, diamonds, or (rarely) an enchanted golden apple.
Zombies, husks, drowned, skeletons, strays, bogged, creepers, spiders, cave spiders, endermen, witches, pillagers, vindicators, piglins, zombified piglins, hoglins, wither skeletons, blazes and silverfish can all go giant. Yes, giant creepers.

Everything is in-game, no config files:

/function giant_mob_events:help — list of commands
/function giant_mob_events:status — giants alive + minutes until the next event
/function giant_mob_events:spawn_now — grow a nearby mob right now
/function giant_mob_events:shrink_all — every giant back to normal
/scoreboard players set interval_min gme.config 5 — minutes between events
/scoreboard players set max_giants gme.config 3 — max giants alive at once
/scoreboard players set size_x10 gme.config 25 — giant size ×10 (25 = 2.5x, 40 = 4x)
/scoreboard players set bonus_xp gme.config 100 — XP for slaying a giant
/function giant_mob_events:uninstall — shrinks every giant and removes the scoreboards, then disable the pack

Download the zip (don't unzip it).
Singleplayer: drop it in .minecraft/saves/<your world>/datapacks/. Server: world/datapacks/.
Run /reload or restart. You'll see "[Giant Mob Events] loaded" in chat.

Built and tested on Minecraft Java 26.3 (data pack format 121). Uses the vanilla scale attribute, so it needs a recent version.

Works alongside most other data packs; it only touches mobs it tags itself.
Good for SMPs, hardcore runs, and "the mobs keep getting bigger" challenge videos.
Free and MIT licensed. Not an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

Made by Prison Ship Labs. Found a bug? Leave it in the issues/comments and it'll get fixed.