Big bang launch guide

6 gigs!!?? Jiminy Christmas batman! That's a lot of space! I wonder that also includes the swap space required as well?

Yes, because of how the program patches the game. You will need to have [Current Maplestory size] * 2 (swap) * 1.125 (new information in patch) + [Patch size * 2] to patch your game. Considering that Maplestory is like 2.2gb, I'd say their recommendation is accurate.