4thulhu—A 4-Sided System for Cosmic Horror

No prep time, hardly any suitable dice to hand, and a craving for Lovecraftian horror? Then look no further.

4thulhu – A 4-sided System for Cosmic Horror – keeps it simple, creates character skillsets on the fly, and laughs maniacally in the face of complete polyhedral dice sets. You can convert existing adventures for other Cthulhu Mythos-focussed games on the fly or create something all your own.

Includes:

• Mechanics for character generation,
• Skill assignment,
• Handling challenges,
• Fighting creatures, and 
• Facing the Cosmic Truth

Plus, there are sample creatures, guidelines on creating new ones, structure for your investigations, and improvising from the ground up with a few random tables.

Character generation keeps things simple and requires minimal effort to start. Instead, the game encourages definition on the fly, setting skills and levels of competence in stone only when needed. All game mechanics use just a 4-sided die.

4thulhu – A 4-sided System for Cosmic Horror – works with any published adventures with minimal effort given to conversion. And, if in doubt, make it up (but keep it consistent, or else the players will turn against you and might sacrifice you to their Dark Cosmic Overlord).

You can download the PDF from DriveThruRPG or look for print versions from All Rolled Up.