This is a mod have many options that changes vanilla behavior. All features can be switched on and off, and all features are off by default.
All features are implemented in a way that has minimal impact on game performance, and have zero overhead when the feature is turned off.
Hide the shield of the off-hand when not defending
The fire stops spreading and goes out after a random tick. (Except for fire on soul sand, netherrack, etc.)
Player will spawn in the village
Nether portals will not be lit
Piglins are immune to fire damage, can survive in the Overworld, and will become zombified piglins when affected by weakness.
(Unlike another mod with similar functionality, piglins will not become immune to cold damage)
Hoglins can survive in the Overworld, and will become zombified hoglins when affected by weakness.
(Unlike another mod with similar functionality, hoglins will not become immune to cold damage)
Piglins have a certain chance of wearing a piece of netherite equipment when they are born
More slimes will spawn in caves
Items dropped by Mobs will always spawn ItemEntiy, instead of the 3% chance in the original version
Silverfish no longer drop experience
Phantoms will no longer spawn at night
Patrols no longer spawn near the player
Cats no longer spawn in the village
Zombie sieges no longer spawn in the village at night
Wandering traders no longer spawn near the player
Tools from the hotbar/hand/offhand and wearing armors no longer drop when the player dies
The player can double jump
When the player is dying, the adrenaline effect is gained, which quickly consumes hunger to restore health
Turn off the Recipe Book
Could save hundreds MB memory if there are lots of recipes.
All the Client Optimizations goes to https://www.curseforge.com/minecraft/mc-mods/flerovium