Quality of Life Data Packs

Check the game rules first

A few of these packs do something a game rule can also do, only less precisely, because a game rule applies to the whole world at once. Since 1.21.11 the rules are written in snake case, so mobGriefing is now mob_griefing.

mob_griefing

Set to false, it stops creepers, zombies, endermen, ghasts, withers, the ender dragon, rabbits, sheep, villagers, silverfish, snow golems and ravagers from changing blocks, and stops mobs from picking up items. That also means farmer villagers stop harvesting and sheep no longer turn grass blocks into dirt. Piglins stop picking up gold ingots, although you can still barter by using the gold on them.

random_tick_speed

Leaf decay runs on random ticks, and so does crop growth, so raising it from the default of 3 speeds up every farm along with the leaves. At the default a block waits a median of about 47 seconds for its next random tick.

limited_crafting

Off by default, which means anyone can already craft a recipe they have not unlocked by placing the items by hand. Turned on, only unlocked recipes can be crafted.

What the packs change

Anti Creeper Grief

A creeper explodes with a power of 3 and a charged creeper with 6. Turning off mob_griefing would save your walls too, but a pack that only targets creepers keeps villagers farming and piglins picking up gold.

Anti Enderman Grief

Endermen only take blocks listed in the enderman_holdable tag, mostly ground blocks and plants such as grass and dirt, sand, gravel, clay, flowers, mushrooms, cactus, pumpkins and melons, plus TNT. Every tick an enderman has a 5% chance to try a block near it. One that carries a block never despawns, and when you kill it, it usually drops that block.

Durability Ping

The only warning vanilla gives is the bar under the item, which shrinks and turns from green to yellow, orange and finally red. A pickaxe, axe or shovel uses one point for every block it breaks, unless the block breaks instantly, and Unbreaking III means only about one use in four costs anything.

Fast Leaf Decay

Leaves decay once no log or wood is within 6 blocks, counted through other leaves, but only when a random tick reaches them. Leaves you placed yourself never decay. Decaying leaves drop a sapling 5% of the time (2.5% for jungle), a stick 2% and, from oak and dark oak, an apple 0.5%. It pairs with Timber!, which brings down all the connected logs at once.

VeinMiner

Most useful in large ore veins, the long winding ones: copper veins run through granite between Y 0 and 50, iron veins through tuff between Y -60 and -8, and both can hold whole blocks of raw copper or raw iron.

Unlock All Recipes

Vanilla unlocks a recipe when you meet its condition. Usually that means holding an ingredient, but the chest only unlocks once 10 inventory slots are filled, and boats once you touch water. The same result without a pack is /recipe give @s *.