Don't mind me, just posting cool box arts so we've got something nice to look at in this thread.
By the way, I don't think the box art has to have some dark, edgy, oppressive atmosphere, or even has to reflect the atmosphere in the game at all — which was, remember, as optimistic or goofy as often as gloomy (the Abe in the N'n'T box art looks apprehensive, and that's appropriate, but the Abe in the original box art is grinning, and that's appropriate too).
It just has to look good. Unfortunately, JAW does not employ any graphic designers.
I do think it would be nice to have a focus on the "world" part of "Oddworld".