TTRPG Wiki

Compare tabletop RPG systems to find your next game

ALIEN RPG vs Murder Mansion

Compare ALIEN RPG and Murder Mansion side by side. See differences in complexity, dice, genre, and more.

ALIEN RPGMurder Mansion
GenreSci-Fi, HorrorHorror, Modern
TagsFear & Stress Mechanics, Survival, Deadly, Atmospheric, One-Shot Friendly, Gritty, Licensed IPSurvival, Dungeon Crawl, Resource Management, Inventory Management, Gritty, Deadly, Rules-Light, One-Shot Friendly, Atmospheric, Random Tables
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 a d20 and add Guts, Brains, or Nerve, meeting or beating a target number that is usually set by the GM, from 5 (almost trivial) to 20 (nearly impossible). There is no separate to-hit roll. A survivor's attack is the weapon's damage die plus Guts, minus the target's Protection. A turn allows up to two actions, normally only one of them an attack.
Diced6 dice poold20
ComplexityMediumLow
AvailabilityPaidPaid
Runnability4 of 5 book tools2 of 5 book tools
LicenseAll Rights Reserved (20th Century Studios license)Proprietary
Third-Party PublishingNot yet researchedNo verified route found
Summary only, not legal advice. Check current terms before publishing.
PublisherFree League PublishingWall of Text Games
Year20252024
LanguagesEnglish, Swedish, French, German, Spanish, Italian, Polish, PortugueseEnglish
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.Groups who want a survival-horror escape for a one-shot or short run, where rationing ammo and solving lock-and-key puzzles matter more than winning fights.
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 settingGear with a durability die, such as flashlights and lockpicks, is spent when that die rolls a 1, which keeps survivors scavenging for replacements. Hunter-class bosses cannot be killed by ordinary attacks and return to ambush the party, so finding a scenario-specific weakness becomes its own objective. Three ready-to-run sample adventures with keyed maps come in the core book, so a group can play before designing its own mansion.
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 editionThere are no levels, experience points, or other advancement rules, so winning fights never makes survivors stronger. Healing items cannot be used during combat except through the Medic's Combat Medicine skill, so damage taken in a fight stays until it ends. The rules cover escaping a single location, with no procedures for social conflict, travel, or downtime between scenarios.