Eyes
 

Yo people why do all the OW carictares have big eyes?

Its a matter of surviving.
Creatures with big eyes are mostly creatures of night, because of the dim light. In order to see the environment better, they need to have big pupils to get the almost nonexistent light to the retina, where the branches of the optical nerve receive and transmit the image formed to the brain.

"they need to have big pupils to get the almost nonexistent light to the retina, where the branches of the optical nerve receive and transmit the image formed to the brain."
That's what I was going to say!

But don't forget some Oddworld creatures have tiny, and some almost unable to be seen eyes. Some don't have eyes at all!

How come some creatures have no eyes at all? Maybe the Scrabs and Paramites we've seen 'till now are victims of Vykker experiments? They've cut out their eyes to make something with them, like glue for instance. If that's true, we might someday see scrabs or paramites WITH eyes. That would be a funny view: scrabs with big red eyeballs.

De creatures without eyes then had to learn to locate there food (like Muds) in another way. (Sonar or stuff like that)

What do you think?

Naturally, the creatures without eyes would use what ever other senses they have to hunt food, and do whatever else they do with their lives. And yes, some use sonar.

I think Alf hinted once that some creatures who appear to have no ideas, actually have very small eyes which cannot be seen.

BIG EYES = CUTE

No need for biological facts. OWI made them with big eyes to look cute and cuddly. So that they can express more emotions etc...