Abe's Oddworld games are some of the Great Games to have ever come out, and the sequel to Oddworld: Abe's Oddysee (being this game: Oddworld: Abe's Exoddus) helped cement that fact.  It is not enough to even call them "classics".  They're not only absolute top quality puzzle-style games, but they have great stories, unique and original characters and settings, and beautiful graphics.  And just the originality of that beautiful new world, "mythology", and those fantastic concepts make these games a cut above the rest!