Adds pig iron ingots which need to be crafted to make steel, also blocks and stairs.
An MTG fork with light RPG elements.
Adds basic stone age & survival tools and makes the start in the world harder
Hammer and anvil for repairing tools.
Adds spears, versatile weapons that can be thrown.
Add more posibilities how to kill mobs and/or players, like traps, throwable TNT, etc.