Have you guys ever heard of a sorta "expansion" called The Aether mod?
If now, here is a little playthrough video of it.
Minecraft: Aether Mod Adventure - Ep. 1 - Gold Dungeon Spotted!Pretty much, it adds a new dimension called the Aether. The Aether is like a hostile heaven. It's really hard to survive at first if you don't know how to play, and it has a shitload of new stuff. Such as mobs, bronze/silver/gold dungeons, new blocks, new minerals, new armor, pretty much everything about it is new.
If you haven't tried it, I really recommend it....Only problem is that you rage a shitload when you keep on dying D: