Oddworld: Enslaved

Decades ago, a spaceship containing a species known as humans crash-landed on Oddworld. The Glukkons saw them as a new species to use and enslaved them all. Since then, humans have only known pain and suffering under the endless servitude they have been subjected to. Until one day a boy and his sister arrive at Rupture Farms and befriend a Mudokon floor cleaner. Soon they discover the Glukkons' plan and escape the farms. Soon they begin to uncover their race's past and vow to free the slave species and forge a future for themselves.