Terran, Silicate (Airless)

Traits: Vacuum, in sun: Hyperthermic, in shade: Cryogenic

Hexes

• Regolith Plains. Abrasion hazard. Being covered in dust adds 1 heat per hour, and party begins with 1 heat when starting an encounter.
• Deep regolith. Ground: 2x penalty. Ground traversal at maximum speed adds +1 heat until one hour is spent cleaning. Party starts encounters with 1 heat unless they have just cleaned.
• Mountains. Ground: 4x penalty. Landmark.
• Labes. Field of landslide debris. Unstable, many boulders, sometimes prone to further landslides. Ground: 2x penalty. Heavy cover available on cover chart. Sinkhole and landslide added to Complications.
• Ancient hills. Smooth, rolling, shallow hills barely tall enough to hide a rover. Only light cover.
• Crater floor. Mostly flat, sometimes a small hill at the center. In a polar hex there is a 2-in-6 chance the party finds a permanently-shaded crater. In that case, they may have deposits of volatiles and water ice just underneath the surface regolith.
• Craggy terrain.
• Volcanic flow zone.
• Lacus Floor. Expanse of hard, former volcanic material. Only light cover.
• Craters: can be within other craters. When rolling random hexes, a crater rim within another crater indicates a smaller crater.

Features

• Boulder field. Boulders the size of houses! Ground: 2x penalty. Heavy cover is always available within 1 combat turn.
• Lava tube. A steep cylindrical cave with a narrow entrance.
  • Common: Linear room 1d4 tiles wide and 3d6 tiles deep.
  • Uncommon+: Linear room 1d4 tiles wide, 3d6 tiles long, with 1d6 branches 1-tile wide and 2d6 tiles long.
• Massif. One isolated mountain dominating a hex. Roll 1d8: 1-6 means the massif in in that border region, 7-8 mean the massif is in the hex center.
• Metal-Rich Meteorite. Counts as source of Metals. Found in the hex region the party moves to.
• Debris field. On a geologically inactive airless moon, might be from anytime in the last million years or so. Low chance of Singular Artifact if the field is old enough.
• Hidden instability. Looks fairly solid, but a brittle roof of rock and regolith is ready to break and collapse! If searched, is a Hidden trap.

Linear Features

• Wrinkle Ridge. River-like system of rough, raised terrain that can extend for hundreds of kilometers.
• Crater rim. Night side and dayside with huge temp changes. Moving along rim adds a linear medium cover feature to encounters.
• Canyon. Heavy cover, but parties outside the canyon always win initiative vs. those below.
• Seeping Lava Flow. Crossing by ground adds 1d8 heat, halved by a successful Save vs. Zone.

Feature Special Rules

Crater Generation

Roll a 1d4. The party has discovered a crater of that diameter. Try to fit the crater template in unexplored hexes. If explored hexes are unavoidable, either fill the crater around them or shrink the crater until it can be fit. If the party has only explored a couple of hexes on the map, they may be placed inside the crater rim instead.

If a Crater is discovered in an explored hex, it is a large crater 1d10 x 100m in diameter capable of serving as heavy cover.

Rarities