Minecraft Slime

Using the simple monster scheme: D(anger) and A(rmor).

Slimes come in three sizes: small (D2, A1), medium (D4, A1), and large (D8, A1). Small slimes do little harm, especially if one were to wear decent-enough armor.

A small slime is funny. A medium slime is annoying. A large slime is dangerous. They are all pretty slow, jumping and jiggling around, so they are easy to run circles around. More likely, however, is that they will block passages and require you to deal with them anyway.

When a large slime would take damage due to a bladed or blunt weapon, it will instead split into two medium slimes. Likewise, a medium slime splits into two small slimes when it would otherwise lose flesh to such a weapon. Small slimes will just perish.

Missiles (or pointy things in general) don't do anything against medium and large slimes. Sometimes they shoot right through, other times they get stuck inside. Common sense kind of thing.

The good news is that slimes are highly flammable. Burning or casting lightning at a slime, at any size, is a good way to defeat it for certain without it splitting. The former method, if you don't want to cast magic, will require you to throw a torch at it.

It takes one round of combat for a medium slime to burn, and two rounds for a large slime to burn. Meanwhile, they continue to attack but ignore any armor.