[ A L I E N M O B I U S ]

[ A L I E N S P E C I E S ]


This generator is in Alpha stage. Expand for more info.

Featuring Xenomorph attacks from PPM Games, used with permission. Check out their Alien RPG Solo rules.

This generator is heavily inspired by Free League's Forbidden Lands Monster Generator featured in the Legends & Adventures booklet. It has been significantly adapted for the Alien RPG but remains very close to the original in intent.

The goal of this generator is to provide you with a foundation upon which you can create your own xenomorphs following rules that have been previously designed by Free League.

The size, type, limbs, head features, tail, armor, home, skills level have been slightly tuned. Some types have been removed.

Traits, weaknesses and motivation have been removed.


  • All range and difficulty levels have been renamed following the naming convention in the Alien RPG.

  • Regular attacks, special and monster attacks have been replaced with the Xenomorph Attacks designed by PPM Games and are being used with their permission.

  • Strength, Agility and Health have been slight tuned.

On stats blocks:

  • Size determine Strength and Acid Splash.

  • Type determine Agility.

  • Strength determine Health.

  • Agility + Movement influence Speed.

  • Agility + best of Stealth skill Level or Move skill level determine Mobility.

  • Agility + best of Insight skill level or Scout skill level determine Observation.

  • Armor determine Armor Rating.

  • Agility determine Attack Base Dice.