[Wil]

It doesn't necessarily ruin your fanfic. Fan-created projects will always exist outside of established canon, so I think you can take the liberty to twist a few things here and there if you really want.

And Oddworld's global biome distribution is completely up in the air. The desert-like Western Mudos, according to the map, is actually north of where Abe and Munch currently are. The map also makes it look likely that the polar regions are colder than the equatorial regions, which makes a lot of sense, but beyond that there's little we can infur.