When was the Dark Sun campaign setting first released by TSR?
The original Dark Sun Boxed Set released in 1991. This product presented base setting details for the Tyr Region on the verge of revolution against sorcerer-kings.
Questions about Dark Sun
Short answers, pulled from the story.
What happened to the Blue Age civilization on Athas during the Green Age?
Halflings accidentally choked the sea with a toxic brown tide that killed everything it touched. They subsequently built the Pristine Tower which burned away the tide and changed the sun from blue to yellow.
How did Rajaat change magic usage on the planet Athas eight thousand years before the current age?
Rajaat took possession of the Pristine Tower and developed two distinct ways to use magic known as preserving and defiling. Defiling magic draws power from life force causing harm to the environment while preserving magic maintains nature.
Which races were created by sorcerer-kings as slave soldiers in the Dark Sun setting?
Half-giants are magically generated human-giant hybrids created as slave soldiers who can only mate with other half-giants. Muls are dwarven-human hybrids bred as slave soldiers who are larger and stronger than humans.
Why has Wizards of the Coast chosen not to reissue the original Dark Sun setting since 2010?
Wizards of the Coast decided against releasing the setting due to ingrained controversial content such as slavery genocide and racial savagery. The company also chose not to release the Mystic class until they do Dark Sun again.