I remember playing the original Oddworld when it first came out. I really enjoyed the aesthetic and the back story, (which was pretty dark), to the game. The graphics were pretty decent.
I enjoyed it a lot and it is credited with renewing the old platform style games from the ZX Spectrum days. I think i stopped playing because i was struggling with the keys and my poor coordination meant i couldn't pass one of the levels. Weren't there quite a few sequel games that fleshed ouit the world a little further?