Science-fiction horror combines isolation, failing technology and threats that characters cannot easily fight. Tabletop RPGs in this niche usually build mechanics around stress, fear and resource scarcity so that tension comes from the rules as well as the story. This guide covers the most commonly recommended games and how they differ.
What makes sci-fi horror work at the table
Good horror games tend to share a few ideas.
- Fragile characters. Characters are specialists, not heroes, and a single bad encounter can be fatal.
- Pressure mechanics. Rolls get riskier as characters become afraid or overworked.
- Limited resources. Air, power, ammunition and time all run out.
- Isolation. Help is far away, and the setting itself is hostile.
Notable games
Mothership
Mothership, published by Tuesday Knight Games, is a gritty industrial sci-fi horror game. It uses a d100 roll-under system, with four stats (Strength, Speed, Intellect and Combat) and three saves (Sanity, Fear and Body). Its Stress and Panic mechanics mean that a character under pressure can suffer a breakdown, which adds uncertainty to every dangerous scene. A boxed first edition was among the most anticipated games of 2024 in an EN World community vote, where it was described as a game in the spirit of the Alien films.
Alien: The Roleplaying Game
Published by Free League, this game captures the feeling of being hunted by a deadly creature. It uses the Year Zero Engine with d6 dice pools, and stress dice are added during tense moments, making actions harder or riskier. It offers a Cinematic mode for short, movie-style sessions in which characters are likely to die, and a Campaign mode for longer play.
Eclipse Phase
Eclipse Phase blends transhumanism with horror. Players belong to a secret organisation called Firewall that protects humanity from existential threats such as rogue artificial intelligences and alien phenomena. Characters can transfer their minds between bodies, which makes identity and body horror central themes. The second edition aimed to streamline a famously detailed ruleset. It suits groups who like depth and philosophical questions.
Death in Space
Death in Space is a rules-light game about people scraping a living on the edge of a collapsing, corporate-dominated universe. Press coverage has described it as a game that lets players enjoy simulating a bad time, with a bleak and darkly funny tone. It is a good choice for short campaigns or one-shots.
Shadows Over Sol and other options
Shadows Over Sol is a hard sci-fi horror game set in a near-future solar system. Many other horror games can be adapted to space settings, so check community recommendations and reviews.
Comparing the options
| Game | Rules weight | Best for |
|---|---|---|
| Mothership | Light | Quick, lethal one-shots and short campaigns |
| Alien | Medium | Film-style tension and campaigns |
| Eclipse Phase | Heavy | Conspiracy, transhuman themes |
| Death in Space | Light | Bleak, humorous survival |
Tips for running sci-fi horror
- Hold a session zero. Discuss content boundaries and what everyone is comfortable with before play. Horror can affect people differently.
- Use lights, music and pacing. Low light and quiet sound effects can help, but keep them simple.
- Make the threat hard to understand. Reveal information slowly.
- Let resources matter. Track air, ammunition and battery power.
- Be ready for character loss. Have players prepare a spare character, or use quick creation rules.
- Keep sessions short. Many horror games work best as one-shots of a few hours.
Where this fits
If you are exploring the wider genre, our overview of sci-fi tabletop RPGs covers other subgenres, and the best sci-fi tabletop RPG picks list helps you compare horror with other styles. If you prefer your dread in a medieval setting, see our guide to grimdark tabletop RPGs.