TTRPG Wiki

Compare tabletop RPG systems to find your next game

ALIEN RPG vs Traveller

Compare ALIEN RPG and Traveller side by side. See differences in complexity, dice, genre, cost, and more.

ALIEN RPGTraveller
GenreScifi, HorrorScifi
Play StyleHorror, Survival, Deadly, Atmospheric, One-Shot Friendly, Gritty, Licensed IPSandbox, Simulation, Exploration, Deadly, Realistic, Character Building, Faction Play
Core MechanicRoll 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 2d6 + skill + modifier ≥ 8 to succeed. Character generation is a mini-game.
Diced6 dice pool2d6
ComplexityMediumMedium
AccessibilityHighLow
CommunityMediumMedium
LicenseAll Rights Reserved (20th Century Studios license)Traveller Fair Use Policy
Cost$$$$
PublisherFree League PublishingMongoose Publishing
Year20252022
Best ForSci-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.Hard sci-fi sandbox campaigns with trading, exploration, and realistic space travel.
HighlightsStress and panic system mechanically reinforces horror tension, two distinct play modes (Cinematic and Campaign), Evolved Edition streamlines rules and improves layout, well-supported licensed settingComprehensive sci-fi toolkit, lifepath character creation, detailed trade/travel systems
ConsiderationsTightly bound to the Alien IP with limited genre flexibility, stress mechanics can feel punishing at high levels, Evolved Edition changes are modest over 1st editionLifepath character creation can produce unplayable results, subsystem rules are spread across multiple supplements, steep buy-in if using official sourcebooks