Addon: Useful Slime
Author: Iced Fox Studios
Useful Slime expands slime from a niche crafting ingredient into a complete equipment and movement system.

The Slime Sword heals its owner, chains damage between nearby enemies and builds a combo that ends in an area explosion. Its alternate attack launches homing slime beams. Slime Boots remove fall damage and preserve momentum through bouncing, while the Slime Sling propels the player through the air. A staff summons friendly slimes and grants movement and resistance bonuses; the shield turns a successful block into strong knockback.

Gelatin, stew and slime soup provide new food options. Two potions enhance jumping and unlock a downward slam that scatters nearby enemies.

Builders receive a low-profile trampoline, sticky slabs and oiled slabs that create fast sliding routes. Oil vials convert one surface into another and can be refilled from oil left by the new Oily Slime. Thin oil layers connect the creature, resource and building mechanics into one survival loop.
How to install the add-on
Download the .mcaddon or .mcpack file, open it with Minecraft and wait for the import to finish. Then enable the resource and behavior packs in the world settings. If the add-on requires experiments, turn them on before launching the world.