Complex sentence: The game takes place in the land of Efferia, where a seemingly endless war has raged between the continent's two species, humans and Yason, who in appearance are like humans only lighter in skin tone and with different shaped ears.
Split into simpler sentences: The game takes place in the land of Efferia, where a seemingly endless war has raged between the continent's two species, humans and Yason. Yason are species that has appearance like that of humans, only lighter in skin tone and with different shaped ears.