Oniichan on 19 May 2009
If world 4 is in pure black tendency then all 4-1, 4-2, 4-3 etc are in pure black. Though if 4-1 was pure black then you defeated the 4-1 boss then world 4 will no longer be pure black.
If you want to get pure black just go to 4-2 and use the stone to give back your body. Then jump of the cliff. Go back to the nexus and repeat those steps until your world is pure black.
