Mobs
Blocks
Items
Environment
Misc
100

This Mob is very common, and used to get food.

Pig

100
You find this everywhere, even underground.
What is Dirt?
100

Made from trees.

Stick

100
This generates in oceans, and you explore this more than anywhere.
What is Islands?
100
Notch will add this in the next update.
What is Map?
200
It floats, and likes to go down.
What is Squid?
200
Red, hot, and is everywhere.
What is Netherrack?
200
Can be cooked, and found in water.
What is Fish?
200
Tool items are found in here more often than on top of the land.
What is Caves?
200
They walk at night and burn in daylight.
What is skeleton/zombie?
300
It floats, but doesn't touch water.
What is Ghast?
300
Can't float, but is found underground.
What is Gravel?
300
Colorful, and made of many items.
What is Dyes?
300
Deep, and usually isn't explored much.
What is Oceans?
300
This will be added officially, but won't look like it does now.
What is Pistons?
400
It jumps on you and doesn't die from sunlight.
What is Spider?
400
Can't be touched, can't be mined, but its everwhere.
What is Air?
400
Can't be found in the Overworld, you have to dig deeper than the deepest.
What is Glowstone?
400
Hard to find on land, but can be used to burn things.
What is Lava Springs?
400
You can spawn them, but they wont be implemented officially yet.
What is Giant?
500
It is weird, and creeps up on you.
What is Creeper?
500
Hard, but not in real life.
What is Obsidian?
500
Can't collect it, not even in the actual game.
What is Quiver?
500
A land completely different from usual.
What is the Nether?
500
Everyone knows him by now.
What is Herobrine?
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