Biomes:
Lowland
Sky Mountains
Forest Hills
Rocky Mountains
Forest Plateu
Granite,
Marble,
Some food,
2 new plants ( still not generate but you can find items in chests)
New armour, weapons and tools,
Possibility crafting horse armor, saddle and name tag.
From metals you can make alloys :
- Bronze ( copper+tin),
- Brass ( copper+zynk).
