Ahhh true. The perfect solution.
Originally posted by chickaDEE Magazine161 levels would be 26 worlds.
161/26 = 6.19 levels per world.
So, these spill over levels (5 of them) will have to be removed unfortunately (sorry guys

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As for world themes, since we'll have 26, we can't have any repeats. But we need to make sure we cover every level theme, so no one feels left out. It is gonna be tricky having a ketchup world, but we can do it.
Since there are 82 unique world themes, we need to somehow fit 26 worlds into 82 worlds. That means 3.154 worlds will need to be in each world, and 6.19 level in each of the 3.154 worlds, in each world. But that's assuming we don't have 10 levels in the best and worst world. That means 2 of the world themes and 2 of the worlds are already accounted for, so instead, we have 24 worlds with 80 themes.
Since we have two roms, however, we need to double everything. That means 160 total themes, with 48 worlds. However, once we take into consideration all the Swiss levels, that will take up at 1 theme and 1 world, which puts us at 161 total worlds, and 49 worlds in the 161 worlds, enough for 1 level in each world, which is truly fair for everyone if you think about it.
161/49 = 3.285 worlds in each world. That leaves us with .285 levels left over for each world. That .285 will have to be put into additional worlds, so we will need 161*.285 = 45.885 additional worlds, bringing the total to 206.885 worlds. However, there's also the possibility of late entries. Assuming that the average number of worlds is 161/80 = 2.0125 new worlds for every additional entry, if we get 15 late entries, we will need 2.0125*15 = 30.1875 additional worlds with 60.375 world themes, bringing the grand total number of worlds to 237.025.