From publisher blurb:
Add the mystical powers of the mind, Psionics, to your White Star or Swords and Wizardry campaign!
Includes the full Psion character class.
A completely new, non-Vancian systerm for handling psionics.
Communicate with your allies in orbit with your Telepathy.
Consult the Akashic Overmind about the true nature of reality around you!
Burn the brains of your foes with your Mind Assault!
Unlike most OSR based power systems, this system is built to make the Psion able to function side-by-side with characters who have miraculous tech at their fingertips.