Owned by famed gambler Alys Eldorose, Fortuna I, or Solitaire, is a diamond planet in the Fortuna System.
She leases parts of it to mining concerns, but mostly uses it for entertainment and gambling.
Bot races take place on the planet’s darkside with feeds for teleoperation and telepresence for the casinos' patrons.
It’s rumored Alys may also have a data vault buried deep underground along the terminator, where the heat starts to climb to metal-liquefying temperatures.