It looks like oddworld would make an interesting old/classic shooter.
I just put the sprites ripped by Cyrus Annihilator from Oddworld Abe's Oddysee and replace some sound in Doom2.wad.
http://www.youtube.com/watch?v=PjWJMoRk-SQ
PD:
Is not a reall proyect. (mainly because there so few oddworld sprites in the internet)
Is more like a fun time with ddworld Abe's Oddysee sprites/sound and Doom2.