TTRPG Wiki

Compare tabletop RPG systems to find your next game

2300 AD vs ALIEN RPG

Compare 2300 AD and ALIEN RPG side by side. See differences in complexity, dice, genre, cost, and more.

2300 ADALIEN RPG
GenreScifiScifi, Horror
TagsCareer-Based, Skill-Based, Simulation, Combat-Heavy, Tactical, Crunchy, Ship-Based, Exploration, Random Tables, Strong GM SupportFear & Stress Mechanics, Survival, Deadly, Atmospheric, One-Shot Friendly, Gritty, Licensed IP
Core MechanicFor a task, roll d10 and add modifiers from applicable skills and characteristics; meet a difficulty target from 2 for Simple to 18 for Impossible to succeed. A natural 1 fumbles, while failed checks use a separate roll to determine whether the character may retry or suffers a mishap. Hasty, hazardous, uncertain, and cooperative tasks modify time, failure risk, information, or group participation without changing the core check.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.
Diced10d6 dice pool
ComplexityHighMedium
AccessibilityMediumMedium
RunnabilityHighHigh
LicenseAll Rights ReservedAll Rights Reserved (20th Century Studios license)
Third-Party PublishingNoncommercial only — Mongoose Publishing Fair Use PolicyNot yet researched
Summary only, not legal advice. Check current terms before publishing.
Cost$$$
PublisherGDWFree League Publishing
Year19882025
Best ForGroups who want career-shaped crews exploring a politically divided interstellar frontier where starship operations and hard-science constraints drive missions.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.
HighlightsCareer terms turn pre-play service into skills and organizational ties, giving each crew member a practical history that feeds later missions. Space combat uses hex movement and signature-based detection, making maneuver and sensor discipline as important as weapon range. Linked world-generation and mapping procedures build planets down to regional terrain, giving exploration campaigns playable locations instead of setting prompts.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
ConsiderationsCharacter creation can end when a turning-point roll fails, leaving a concept in its current career before the player intended. Combat routes each hit through location and damage-type tables, adding several lookups to a fight. The future history assumes a World War III and French hegemony, so campaigns are tied to a specific 1980s vision of the 24th century.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