The Scadian Homeworld is found in the Space Trip arcade game.
First time:
Message from First Officer Snarfbob Dunn:
Captain, we've neared the Scadian homeworld, and it is currently under siege by a Murderbot Dreadnought. Which... has detected us, apparently, and is now shooting at us.
Captain, we're receiving a chorus of transmissions from the surface, celebrating our liberation of the Scadian homeworld. They have also dispatched a ship bearing 50 Scadian maidens, who have enthusiastically joined our crew!
Wonderful, wonderful! Our tankards overflow with the finest space-mead, and our hearts overflow with joy and gratitude to you, the Bringer of Peace.
Can you fix this ID Transmitter for us?
Message from Scadian High Council:
Would that we could do this for you, noble defender of our honor, but we cannot. Our inscrutable neighbors, the Hipsterians, might be able to help you. If you wish to speak with them, you will need this tome of ancient lore, gathered by venerated Scadian monks over the course of many generations. Luck be with you, O Great Defender.
Message from First Officer Blorf Stipe:
Captain, the data the Scadians have sent us is remarkable -- it appears to be a comprehensive, cross-indexed codex of the Hipsterian language. We should find them, so I can try it out!