This entry is part of the PBM List.

Type: Science Fiction
Last-Update: 2018Jul06
Keywords: free, open-ended, www, human, modern, rpg


Underneath beautiful Yellowstone National Park is the largest and most powerful supervolcano on the planet. It last erupted 640,000 years ago. The next eruption is now overdue, and its about to happen.

Without warning, signs of an eruption begin to appear. A series of earthquakes strike Yellowstone National Park. In Mammoth Hot Springs, a dormant hot spring suddenly erupts like a geyser. In Norris Geyser Basin, Steamboat Geyser experiences more frequent eruptions. In the Upper, Lower, and Midway Geyser Basins, Old Faithful erupts infrequently, some active geysers suddenly stop for long periods of time and then erupt again, thermal pools erupt like geysers, and new volcanic vents open up in the northwestern corner of the park. An ambitious attempt by NASA to prevent an eruption to prevent an eruption meets heavy opposition and is stopped by the Federal courts.

Then the supervolcano unleashes its fury, catching the entire world unprepared. Populated areas far beyond Yellowstone are devastated by lava and mud. Clouds of ash drift across the continent and around the world, blanketing the land. The fallout kills people and wildlife, destroys crops and livestock, renders machinery totally useless, and makes cities uninhabitable. The fallout also blocks out sunlight, causing global temperatures to drop and plunging the planet into a volcanic winter.

Famine and disease result. Civilization breaks down. People are struggling to survive. National governments fall. Some exploit the disaster for their own selfish gain while others try to save lives. In space, the inhabitants of the International Space Station are trapped.

Humanity has no choice but to rise from the ashes and rebuild civilization, while those living in space must find ways to survive.....

Join us and participate in the story of what might happen if the Yellowstone Supervolcano erupts. Create a character living anywhere in the world or on the International Space Station. We are looking for the following characters:

1. Ordinary civilians 2. Law-enforcement 3. Government 4. Military 5. Religious 6. Business 9. Science 10. Astronaut 11. National Park Service Ranger 12. Member of the World's Indigenous Peoples-one of our storylines is the effect of the eruption on indigenous peoples around the world, their struggle to survive, and the assistance they give others, such as teaching their survival techniques.

To join: email the GM at or log on to the website at

To get a good idea of what our characters will be facing, see


Played the game? You can send me comments to be placed on this page by writing But don't write me attempting to join the game -- write the GM, whose address is above.

Are you the GM? You can update your listing by writing If you have something new to say about your game, for example an opening for new players, you can create an announcement for your game.

Don't see your favorite game? Then you can add an entry for it.

Return to the PBM List.

Greg Lindahl