Dark Sun 5E
Savage, exotic, and unforgiving, the world of Athas is unique. This harsh environment has given birth to a number of new peoples and monsters, including two character races: muls, an incredibly tough race of half dwarves, and the mantis like thri-kreen, a swift and deadly insectile race.
Many of the more familiar races of the DUNGEONS & DRAGONS® game roam the wastes of Athas. However, these beings have adapted over the centuries to their brutal home and bear little resemblance to their counterparts on other worlds. (DS-CS-4E)
The races available for creating characters are: dray (dragonborn), dwarf, elf, goliath (half-giant), half-elf, halfling, human, mul, thri-kreen. As an option, if your DM allows it, you can also use the aarakocra or the genasi to create your character.