Blue Slime Ball
Slime balls are items introduced in vanilla Minecraft and expanded in Tinker's Construct. There are four types of slime balls (blue, green, orange and purple) but they are all named "slime ball". They can be found as a drop from slimes or in form of congealed blocks on floating islands, known as Slime Islands.
Green Slime Balls[]
Green slime balls are a vanilla item dropped by normal green slimes or found as congealed blocks on floating islands. Green slime balls can be crafted into and from Congealed Green Slime Block.
Blue Slime Balls[]
Blue slime balls are an item added by Tinker's Construct and are dropped by blue slimes or found as congealed blocks on floating islands. Blue slime balls can be crafted into and from Congealed Blue Slime Block.