An other world on minecraft is the nether. Nether is a hot place full of mobs (creatures) and lava. The mobs in the nether are Blazes, zombie Pigmen and Ghasts. You have to make a portal made out of obsidian and flint & steel.
Nether portals.
This is the full version. This is the Eco version.
This is Nether.
Another world on minecraft is The End. A place full of Endermen and dragons. One of these dragons is a boss to get a dragon egg. To get to The End you have to first go to the Nether,kill a blaze and take the blaze rod, then kill an enderman and take it's ender pearl. After this you must craft an eye of ender. you must use this and it will fly and take you to a river or a lake. Now you must now dig down and you will find a place called the stronghold.
This is the stronghold.
This is The End.