I Do Not Think Game Worlds Will Increase in Size This Gen :(

[MDMAlliance]

generic-user-1 said:

jonathanalis said:
1-take a small map
2-copy it
3-change randomly the position of elements
4-paste it in other place
5-repeat 2 to 4 until complete a giantic map

you can have the map as huge as you want with a minimum HD space.
Variety of elements that can be a limit factor, but, 50 gb would be enough for mosts cases.

also, i thought the limit of this gen was 100 gb. you know, double layered blu-rays...

daggerfall? it is gigantic and only 150mb... 

I didn't really know what daggerfall was, so I googled it.  It looks like it does pretty much exactly what jonathan says.  

What Jonathan is saying is that 50 GB for current gen (because the textures for daggerfall are not good at all) should be enough when you follow the format he's given, that is actually quite evident that the example you're giving is doing just that.