AIRTIGHT – PERIHELION
AIRTIGHT – PERIHELION is a science-fiction adventure about an expedition to Harrow, a long-period comet with a vast void beneath its nucleus.
- Game system
- Traveller
- Adventure type
- Campaigns, Adventures & Modules
- Language
- English
Adventure overview
A prospecting crew must contend with a rotating, low-gravity surface, unstable ice and a structure buried below it, while the comet approaches the Sun. The listing emphasizes practical hazards including time, air, dust, mass and heat, with a twelve-segment Perihelion Clock shaping the expedition’s shrinking margin. Written for AIRTIGHT and PIONEER, it also offers guidance for Classic Traveller and adaptation to Cepheus and other grounded 2D6 science-fiction games.
What this product offers
The adventure follows a crew sent to investigate a vast void and hidden structure beneath the comet Harrow’s ice. Its description highlights hazards involving time, air, dust, mass and heat, as well as a twelve-segment Perihelion Clock. It is written for AIRTIGHT and PIONEER, with guidance for Classic Traveller and adaptation to Cepheus and other grounded 2D6 science-fiction games.
Suggested use at your table
A GM could frame the expedition around choices about what to explore, recover or report, using the comet’s approach to create pressure as described in the listing. Treat the clock and environmental risks as tools for presenting those decisions; these are usage suggestions, not claims about additional included materials.
Ideas for your table
- Suggested use: Ask the crew to decide what to investigate and what to communicate to Earth as the comet approaches the Sun.
- Suggested use: Bring the listed air, dust, heat and time pressures into the expedition’s choices.
Questions & answers
What is this product?
AIRTIGHT – PERIHELION is a science-fiction adventure about investigating a hidden structure beneath the ice of the comet Harrow.
Where can I see the purchase and download options?
Visit the original DriveThruRPG listing to check its current options. Purchases and downloads are handled there, not by GMCraft Tavern.