Late in season seven of SG-1, talks began of a spin-off series and the producers were left with a serious dilemma, since the seventh season of Stargate SG-1 had been planned to lead up to the great discovery of the lost city of the Ancients, Atlantis.
Ale poté se začalo mluvit o spin-off seriálu a producenti měli velké dilema, jelikož se plánovalo, že sedmá série Stargate SG-1 přinese velký objev ztraceného města Antiků, Atlantidy.