Delta Green

Delta Green is a contemporary horror role-playing game that merges elements of Lovecraftian horror with modern conspiracy theories. Players become part of a secret government agency tasked with combating paranormal threats while maintaining their sanity and moral integrity. The game is renowned for its intense psychological impact, deep narrative, and the ethical dilemmas it poses.

At-a-glance

Cosmic Horror • Needs GM • 5/5 complexity • Medium prep

Delta Green

Delta Green: A Comprehensive Overview Delta Green is a tabletop roleplaying game that blends Lovecraftian horror with modern conspiracy and tactical gameplay. Players assume the roles of agents tasked with protecting the world from unnatural threats, often at great personal cost.

Theme and Setting

The game utilizes a streamlined percentile system derived from Call of Cthulhu, emphasizing investigation, resource management, and the psychological toll of confronting cosmic horrors. Its unique mechanics and bleak setting cater to a mature audience seeking a challenging and immersive experience.

How Play Feels

Delta Green is deeply rooted in the cosmic horror of H.P. Lovecraft's Cthulhu Mythos, but it transposes the setting to the modern era.

What Makes It Distinct

Agents operate in a world of government conspiracies, paranormal threats, and the ever-present danger of losing their sanity. The game emphasizes a bleak and realistic tone, focusing on the psychological impact of encountering the unnatural.

Where It May Not Fit

You want a very light rules load You dislike tactical combat or heavier encounter procedure.

Decision guide

What this game is about

Key facts
Players
2-5 players + GM
Session
120-240 minutes
Prep
Medium
Play profile
Complexity
5/5
New GM Fit
2/5
Roleplay Focus
4/5
Combat Focus
3/5
Tactical Depth
5/5
Campaign Depth
4/5
Who it suits
Best for
Tables that want solving problems and following clues to matterGroups that want scarcity, logistics, or survival pressure to matterLong-form campaigns with room for the table to build momentum
Avoid if
You want a very light rules loadYou dislike tactical combat or heavier encounter procedureYou mainly want short standalone sessions with minimal carryover

A strong fit for groups that want solving problems and following clues to matter, with investigation helping define the experience.

Agent data

Structured data and an explicit decision profile JSON document are available for remote agents.

Open agent JSON