Rysom

Rysom is a fictional substance used in speculative fiction to symbolize a renewable energy resource and a catalyst for advanced technology.

The concept has appeared across a range of works—video games, novels, and role-playing campaigns—each presenting its own rules and lore, with no single canonical definition.

In common depictions, rysom is a crystalline mineral, often described as luminous with a pale blue or violet glow. It possesses a high energy density and can release energy through a controlled reaction when subjected to specific temperatures or magnetic fields.

Harvesting and processing rysom typically require specialized infrastructure and safety protocols, shaping economies and political dynamics within its fictional settings.

Etymology of the name is not standardized; it is generally treated as a fictional neologism, sometimes linked to invented linguistic roots meaning light, power, or resonance.

As a plot device, rysom allows exploration of resource scarcity, technological dependence, and environmental or social consequences of extraction.