UPDATE : Oddworld Inhabitants released the language patch on Steam! Check if you have a download in your Steam client!

https://gtm.steamproxy.vip/games/15740/announcements/detail/1595885640817139286

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(i'll write in english so everyone will understand me):

This patch was sent to Oddworld Inhabitants some months ago , hoping they will release it "soon". Since they are busy with other projects, i decided (with the permission of the developers) to publish it by myself temporary. When they will release it via update, i'll delete this guide (since it will become useless).

But until that...here's my fanmade patch! All the files have been extracted by xbox versions in each localization.