GAINS RPG is a dark fantasy post-apocalypse blending Dark Sun, Fallout, Dark Souls, Elden Ring, and Mad Max. Under two suns — one wandering, one fixed and flickering — four survivors protect Mihu, a child carrying the last great source of magic, from Morvath: an ancient lich who believes destroying magic will heal the world he shattered once already. His cult, the Order of the Source, hunts her across a wasteland of scavengers, insectoid Chitinikk, and a corrupted AI called Xaad-aaj. Themes: a natural cycle worth protecting even from good intentions; corruption that tempts rather than forces; ordinary people unknowingly serving evil; the cost of protection itself. Atmosphere: horror through implication, not exposition — clinical villains, quiet dread, dark humor holding the world together between despair.
Recipe: Wilderness Encounter
The Fog That Counts the Living
The White Lung Basin appears first as a pale wound beneath the two suns. Salt stretches to every horizon, broken by black stone ribs and the skeletons of machines whose purpose no living person remembers. The wandering sun burns overhead, while the fixed sun flickers in place, turning every shadow into a brief, incorrect version of itself. Fog creeps along the ground despite the heat. It smells of pennies, wet ash, and something medicinal left too long in a sealed room. Half-buried wagons mark the old road. Their canvas has become translucent saltglass, and their wheels are arranged in careful circles around a dry firepit. Beneath the crust, something clicks once, then stops. Farther ahead, black spires divide the basin into the narrow passages of Needleback Ravine. A voice drifts from them in the wind, calm and bloodless: a route calculation, a child's name, and an assurance that the most efficient protection is sometimes abandonment. The wasteland does not force anyone to choose the cruel path. It merely makes that path sound practical. Every safe route costs water. Every ally has been lied to. Every useful machine remembers a master who may still be listening.
Sella Venn, written on a wagon axle
“If the fog starts giving advice, thank it politely and walk the other way.”

White Lung Basin

Needleback Ravine

Glassmaw Burrower, Mother-of-Teeth
A huge salt-burrowing arthropod whose translucent armor and mineral chimes make it both a nightmare predator and a fiercely protective parent.

The Pale Mandibles
A disciplined Chitinikk hunting party manipulated by corrupted machine signals into serving Morvath's campaign against magic.
Bundle Contents
Generated entities
Regional Effect
The Listening Fog
The mineral fog reacts to Source magic, briefly shaping voices and footprints from possible futures. It is most active when the fixed sun flickers, making familiar paths appear subtly rearranged.
At the start of each travel scene, characters must pass a DC 14 Survival or Wisdom saving throw or lose their bearings and suffer disadvantage on their next navigation, Stealth, or Perception check. Mihu automatically detects the safest route but gains one level of magical fatigue when she does so.
Connections
White Lung Basin
CONTAINS • Needleback Ravine
White Lung Basin
NESTING_GROUND_OF • Glassmaw Burrower, Mother-of-Teeth
Needleback Ravine
HUNTING_ROUTE_OF • The Pale Mandibles
Needleback Ravine
HIDES • Sella Venn
Sella Venn
KNOWS_SAFE_PATHS_THROUGH • White Lung Basin
Glassmaw Burrower, Mother-of-Teeth
TERRITORIAL_RIVAL_OF • The Pale Mandibles
The Pale Mandibles
SEARCHES_FOR • Sella Venn
Cross the White Lung Basin before the mineral fog closes in, using the safest route through the Glassmaw Burrower's territory.
Convince the Pale Mandibles that the survivors are protecting Mihu rather than exploiting her, or misdirect them without provoking a full hunt.
Recover and decide the fate of Sella Venn's hidden condenser before the Order's agents reach the ravine.
