ALIEN RPG vs Diaspora
Compare ALIEN RPG and Diaspora side by side. See differences in complexity, dice, genre, cost, and more.
| ALIEN RPG | Diaspora | |
|---|---|---|
| Genre | Scifi, Horror | Scifi |
| Play Style | Horror, Survival, Deadly, Atmospheric, One-Shot Friendly, Gritty, Licensed IP | Worldbuilding, Collaborative, Tactical, Realistic, Toolkit, Sandbox, Narrative, Fiction-First, Hackable, Tag-Based, Skill-Based, Classless |
| Core Mechanic | Roll a d6 dice pool (attribute + skill). Each 6 is a success. Stress adds extra dice — better odds, but stress dice that roll 1 trigger panic. Push rolls to reroll failures but gain stress. Cinematic mode for one-shots, Campaign mode for long-form play. | Roll 4dF (four Fudge dice, range -4 to +4) plus a Skill from the character's 15-skill pyramid, compared against a fixed difficulty or an opposed roll. Spend a fate point to invoke one of your Aspects for +2 or a reroll; the referee compels Aspects to push the story and pay fate points back. |
| Dice | d6 dice pool | 4dF (Fudge dice) |
| Complexity | Medium | Medium |
| Accessibility | High | Medium |
| Runnability | High | High |
| License | All Rights Reserved (20th Century Studios license) | OGL v1.0a |
| Cost | $$ | $ |
| Publisher | Free League Publishing | VSCA Publishing |
| Year | 2025 | 2010 |
| Best For | Sci-fi horror campaigns and one-shots in the Alien universe, with a stress/panic system that mechanically drives tension. Supports both deadly cinematic one-shots and long-form campaign play. | Groups who want to collaboratively build a six-to-ten-system star cluster at session zero, then play hard-SF interstellar campaigns where personal firefights, vector-based ship duels, social confrontations, and platoon-scale battles each run as their own dedicated mini-game. |
| Highlights | Stress and panic system mechanically reinforces horror tension, two distinct play modes (Cinematic and Campaign), Evolved Edition streamlines rules and improves layout, well-supported licensed setting | Cluster generation rolls Technology, Environment, and Resources for each star system on a -4 to +4 scale, then the table maps slipstream links between systems before play — the setting is built collaboratively rather than handed to the players. Space combat collapses range and velocity onto a single -4 to +4 vector track, so a torpedo-heavy frigate trying to hold standoff range and a beam-armed cruiser trying to close create real positional tension without grids or hex maps. Personal, social, and platoon combat each run as separate mini-games sharing one fate-point economy, so debating a planetary council, leading marines into a city block, and a knife fight resolve in the same language while feeling mechanically distinct. |
| Considerations | Tightly bound to the Alien IP with limited genre flexibility, stress mechanics can feel punishing at high levels, Evolved Edition changes are modest over 1st edition | Built on the pre-Fate-Core 2009 version of the Fate engine — terminology, the aspect-invocation flow, and the older stunt design predate later refinements, so players coming from Fate Core or Fate Accelerated will need to relearn the conventions. Cluster creation, system linking, and the five-phase collaborative character generation are designed to fill a full first session before play begins, so the game does not support spontaneous one-shots or solo character prep. Vector-based space combat enforces momentum, fuel, and reaction-drive constraints, so ship scenes resolve as deliberate tactical exchanges rather than narrative-first cinematic dogfights. |