Michael Siebold

Feral Prehistoric RPG. Easy to learn, wildly historically inaccurate, and packed with a big wilderness adventure.

Loud, colorful, and cartoonish art book, showcasing the demonic forces living in their various hells, and the clerics who worship them.

An official OSE supplement of demons, cults, and dark magic.

FLAIL is an old-school, fantasy RPG where spells act up, weapons fall apart, and characters survive mostly through nerve and sheer luck. Designed for people who like single-session dungeons and short campaigns of 10~15 sessions. Low-prep, max play.

Blades ’68 is an official supplement for Blades in the Dark, moving the timeline forward 100 years to the swinging 60s.

Mothership space trucking 101, set in the star system surrounding Prospero's Dream

The Green Ghost's oxygen smuggling ring deals in the shadows beneath the roaring fans and events of Beach Breeze Rally DX, an arcade racing game set in a virtual slickworld. Race and join the leaderboard, or investigate and topple the operation.

PROSPERO'S DREAM is the new campaign setting for the Mothership Sci-Fi Horror RPG. It expands and augments the content in the award-winning module, A Pound of Flesh. The boxed set contains three zines, warden's tools, and so much more.

Turning back leads somewhere new. The gun in your hands is missing. The ringing grows louder.

A media-fueled toolbox and adventure for the Mothership RPG. BREAKING NEWS drops you into Prospero’s Dream, where information is currency and factions fight to control it. Every lead drags you deeper. Whose truth will you print, and what will it cost you?

In the verdant and tightly-wound habblock known as the Grove, where each alley and every inhabitant is home to old traditions, the Antecedent Solarian Fellowship prepares for the three-day Solstice festival.

A storytelling game of four doomed musicians and their poor decisions.

LIMINAL HORROR: Deluxe Edition is the definitive version of the world's greatest horror RPG. Newly revised, expanded, and available in two beautiful hardcover books.

Flotsam drifts on artificial tides in a remote coastal outpost. Document what happened to the crew of this sea-struck facility, or add yourself to the ledger.

Jurassic Park meets Reality TV. Your crew crashes on a moon-sized zoo of genetic engineers—can you escape?

Stay Frosty is an OSR game of future marines versus whatever the universe can throw at them. Play games in the style of your favourite military sci-fi movies and video games.

Indiana Jones meets Stargate in this desert delve to uncover ancient alien secrets before they're lost forever beneath shifting sands. Includes a smuggler's toolkit for continued adventures in the desert and across the Outer Rim.

Death Pays All Debts adds a new tower in the depths of Prospero’s Dream loaded with loot and danger. Enterprising crews robbing the tower can walk away made for life. Unlucky ones will perish in the attempt… or worse.

A missing scientist. An art deco pharmaceutical conference centre, now used for... other things. Massive bounties. Zero chance things will go wrong. (3 truths 1 lie.)

A hardcover toolkit for building your own bounty hunting campaign in the Mothership Sci-Fi Horror RPG.

A neon noir murder mystery on a rogue planet, drifting into the dark between the stars. Intrigue, danger, and conspiracy lurk among the tarnished dreams of Interloper.

Experience fantascience roleplaying at the end of time. Escape the end of history. The eternal civilization is perfect. So say the gods, the machines. Will you defy the endless circle of awakening and forgetting? Can you kick a hole through the sky?