Not work with the currnt version of the game! Update:
So much that i want to do with this mod, so little time.
I added a different version, once you go to hell world, it will load a random world of yours (1-5) and use it as a hell world.
Once you get out of the hell world you will be again in the world you chose from the menu.
Enter again for another random world.
Things you should know!
1)Once in hell, if you see any place that are still not generated, hell world will create something with the hell terrain generation, so make backups.
2)Ghasts can destroy things, so careful.
Things i want to do if i have the time (Or someone cares to do it)
1)Make hell world don't travel 4X times faster.
2)Hell use another textures, so it would be like sillent hill.
3)Secrets passages that only appear in hell (maybe)
A very simple mod, instead of hell world making his own folder on the computer, it use the same as the regular world.
Hell (to me it always gonna be hell) still work like hell, so a portal in hell world still gonna to put you somewhere else in the world wen you comeback to the normal world.
What the mod does:
-If you are in hell, minecraft will use the hell terrain generator, so wen you are back to the normal world you may find places created with the hell generator.
-Enemies will travel with you, enemies are saved in the save files, so if you back to the normal map the game will read "Put zombie pig here" and add the hell monsters to the normal map.
-Things created and destroyed will go to the another world, good luck finding tho since the hell put you far away from everthing.
This was a personal mod, just wanted to share it in case someone would like to play the game this way.
I think this is actually a lot cooler than the Nether itself. It reminds me a lot of The Legend of Zelda: A Link to the Past, and the dark world in it. I think I'll stick to this than the nether itself. Great mod.
Hrm...I am uncertain exactly what this mod is supposed to do ... does it load Hell-world Netherworld textures as part of the normal world terrain procedural creation stuff (like, you walk around and as you do so, it might create a hell-world section) or is this simply to get the game to behave differently?