Delta Green (2016)

Overview

Delta Green is a standalone tabletop roleplaying game of modern conspiracy and cosmic horror. Originally a supplement for Call of Cthulhu, the current standalone edition was published by Arc Dream Publishing in 2016. Players take on the roles of federal agents or contractors working for a secret, illegal organization dedicated to containing supernatural threats and covering up the existence of the Cthulhu Mythos to protect the United States. The system it directly evolved from is
Call of Cthulhu https://groupfinder.eu/library/call-of-cthulhu-2014
Description In Delta Green, the horror is not just about monsters; it is about the toll that a life of secrecy and violence takes on the human soul. Agents juggle their high stakes investigations with their crumbling personal lives. They must navigate a world of bureaucratic red tape, government conspiracies, and sanity shattering entities while ensuring that no one, not even their own families, ever finds out the truth. The game is famous for its bleak tone and focus on the cost of the "Great Work." System Overview & Key Features
d100 Percentile System The game uses a familiar percentile dice engine. Skills are rated from 01 to 99. To succeed, you must roll equal to or under your skill rating. If the tens and ones digits match (a double) and the roll is a success, it is a critical success; if it is a failure, it is a critical failure.
Bonds and Domestic Ruin Agents have Bonds representing their relationships with loved ones or colleagues. When an agent suffers Sanity loss, they can choose to project that trauma onto a Bond to reduce the loss. This mechanically represents the agent coming home and taking their trauma out on their family, slowly destroying their personal life to stay functional in the field.
Sanity and Adaptation The game tracks three types of Sanity loss: Violence, Helplessness, and the Unnatural. If an agent experiences enough Violence or Helplessness without breaking, they can become "adapted," making them more resilient to those triggers but less capable of maintaining human empathy and Bonds.
Lethality Rating Instead of rolling many dice for heavy weapons like assault rifles or explosives, Delta Green uses a Lethality percentage. If the player rolls under this rating, the target is instantly killed. If they roll over it, the weapon deals a fixed, significant amount of damage instead.
The Home Phase Between missions (Operas), players play through a "Home" scene. They must choose how to spend their limited time: fulfilling responsibilities to maintain Bonds, seeking therapy to recover Sanity, or practicing skills. Choosing one often means neglecting the others, leading to a downward spiral of isolation.
Special Training and Agencies Character creation is deeply rooted in real world professions. Whether you are a CIA Case Officer, an FBI Special Agent, or a CDC Epidemiologist, your profession dictates your starting skills and the federal resources you can leverage during an investigation.
Additional links deltagreen.com https://deltagreen.com - Official Delta Green website arcdream.com https://arcdream.com - Official Arc Dream Publishing website

Active games and players

DG
Delta Green
Online
Oneshot
Delta Green: Reverberations
New
Posted 8 hours ago
Players
2/4
GM
1/1
Delta Green
en English

Delta Green: Reverberations

Roleplay focused Roleplay focused
Newbie friendly Newbie friendly
I’m looking for 2 more players for Reverberations, a Delta Green scenario set in modern-day Chicago: "A Nineties rave drug called Reverb is back on the streets, stronger than ever - and now users and dealers are disappearing." Game details System: Delta Green Scenario: Reverberations Date: Saturday, 8 August 2026 Time: 13:00 EEST / 12:00 CEST / 11:00 BST Format: Online (Discord) Length: The scenario may take 1-2 sessions. If necessary, an additional session will be held at the same time on Sunday. What to expect My games tend to be discussion-heavy. Players spend time comparing theories, examining evidence, deciding what different clues might mean, and discussing what they want to investigate next. I use lots of images, clues, handouts, and in-world documents to make the investigation feel tangible. I try to reward curiosity and creativity: noticing details, following leads, asking questions, and making use of the locations and NPCs. My goal is to make the game as immersive as possible. This is an investigative horror game rather than a combat-focused one, although combat is always an option. The point is not necessarily to discover the "correct" answer, but you should enjoy engaging with the mystery and making decisions as a group. I strongly prefer players who have not previously played or read Reverberations, so that everyone can experience the investigation and its surprises naturally. That said, new and experienced players alike are very welcome, and you do not need to know the Delta Green system at all before playing. Platform and registration This will be an online voice game. Accepted players will receive the voice-chat information, character materials, and other game documents before the session. You can read the event details and request a place through my Delta Green calendar: https://luma.com/deltagreen

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DG
Delta Green
Online
Campaign
Delta Green: A night at the opera
Players
2/5
Paid game
Paid game
GM
1/1
Delta Green
en English

Delta Green: A night at the opera

Paid game Paid game
Roleplay focused Roleplay focused
Sunday +2 GMT, biweekly, 20$ per session Foundry + Discord Sign up on Startplaying HERE - You are part of secret government organization that deals with unnatural threats and protects the world from experiences you will need to live for the rest of your life. Conducting a Delta Green operation is like an immune system response; you must identify and destroy the infection before it kills the body. This campaign comprises of six operations for new and old Delta Green players that would like to face reality where lovecraftian monstrosities are more down to earth then you would think. You can join for all of them as one ongoing cycle or pick and choose which operations you would like to be part of - check "party notes" below to see which operation is currently played. • Reverberations: Reverb is back in Chicago. Users vanish, leaving wrecked rooms behind. Stop the source of this unnatural threat. • Viscid: A geneticist dies in Seattle. Unnatural "Blue Blood" is spreading. Confront a lethal conspiracy before it’s too late. • Music From a Darkened Room: 18 people died at 1206 Spooner Ave. An agent just joined them. Enter the house that is cold, alive, and hungry. • Extremophilia: A deputy dies of poisoning in Montana. Stop a contagious threat before you become its next vector. • The Star Chamber: Adjudicate a mission in Myanmar. Replay choices to find the truth: did they betray humanity to the Tcho-Tchos? • Observer Effect: A lab looked too deeply into reality. Isolate the staffers before a mindless chaos consumes our existence. Never played Delta Green? Don't worry - game is simple and you will pick up the system as we play! We will kick off with session zero to agree on table rules and expectations. Before joining be aware that this game is for mature players and will involve difficult moral decisions as well as might involve emotional roleplaying about human relations and their slow degradation. It is not a happy game about killing monsters. It is a game about consequences. This is an ongoing campaign. We finished Viscid and are looking for fresh blood to start Music From a Darkened Room.

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DG
Delta Green
London
Campaign
Delta Green - East London
Players
2/4
GM
1/1
Delta Green
en English

Delta Green - East London

Horror Horror
LGBTQ+ friendly LGBTQ+ friendly
New Orders from A Cell I'm looking to put together a group of 3-4 people to start up a new, in-person Delta Green game. I have 2 new players and so am looking for 1-2 more. Let’s start off with self-contained sessions and see if it evolves into something more long-form. I will be running this as a game of modern-day conspiracy horror with burned-out federal agents combating unknown cosmic threats and late-capitalist rot using only their wits and whatever governmental overreach they can muster. Slow-burn investigations build to paranoia and desperate actions where the agents must ask themselves whether what they are fighting for is really worth it. Game details: Day/Time - Saturdays - 1pm to 5pm. Offline - East London public location (i.e local pub or gaming bar). Currently most likely either Arcanist's Tavern or Loading Bar, Stoke Newington. Scenarios - I am looking to start off running the group through published scenarios/campaigns (Last Things Last, Puppet Shows and Shadow Plays, Owlshead Mountain, Ex Oblivione) before introducing home-brewed content. Frequency - The game will be run episodically in that we will play in short collections of sessions over subsequent weeks that cover an operation and then take a break. Operations typically run 2-4 sessions, played weekly with roughly a 4-week break between operations. Session 0 - we will have a designated Session 0 as an opportunity for everyone to meet for the first time, get an introduction to the campaign and create characters. Session 0 will also cover lines and veils, X-card in play and any specific content warnings before each operation This group is not a fit if you're looking for high-action combat, monster-of-the-week pulp or a long-running heroic arc. Information about me: I’m a mid-30s GM based in London. I’ve run a range of TTRPGs (DnD, Troika, CoC, Delta Green, Symbaroum) for both public and private groups for a number of years. I enjoy running players through investigatory campaigns where small details unravel into wide conspiracies. I’ve been a big fan of Delta Green since the new edition and have run several games in the system. I am eager to start a dedicated group with fellow fans or interested newcomers. I'm looking for players in a similar life stage so scheduling doesn't keep collapsing so this group would be best suited for those 25+ who are looking to balance TTRPGs with other demands. If this game sounds like something you would like to join, complete the survey below and I will revert asap. Link Drop me an message with any queries and I will revert as soon as I can.

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New
Posted 22 hours ago
en English
BitD
Blades in the Dark
CoC
Call of Cthulhu
...
Online
Izzy
I'm Izzy. 28. They/it.  I have over 10 years of experience in the tabletop space. On/off over the years with playing as finding groups that stay together takes time.  I have played in 2 completed 5e dnd campaigns that lasted over 2 years separately. Rime of the Frostmaiden & a homebrew Strahd campaign.  I will happily play in 5e & 5.5e games, though I have had an increased interest in p2fe/p2fre!  Tabletop games i have liked and played, would play again: 5e, pf2e, Vampire the Masquerade, Monster of the Week, Monsterhearts, Wanderhome, Call of Cthulhu  Tabletops I have not played but would be interested in: Blades in the Dark, Scum and Villainy, other Powered by the Apocalypse games or Forged in the Dark games, pf1e, Werewolf the Apocalypse, other World of Darkness games, Cyberpunk Red, etc etc My main goal as a player is to be a group player, to be someone that is wholly on the team with the other players! I love the collaborative nature of tabletop most, and why I always hold myself to be flexible and prioritize everyone's enjoyment and keep the table flowing! My characrer ideas are always many, but playing a characrer to the T is not a priority in the sense; that if it disrupts the flow and story of the table or conflicts wirh the group? Then I scrap that idea or develop the character different to mesh better!
en English
DH
Daggerheart
CoC
Call of Cthulhu
...
Online
Matt Hunter
Hey, I'm Matt (or Wayne). I like building characters with actual flaws who make questionable decisions for the sake of a good narrative arc. I tend to get overly invested in fictional worlds, which is probably why I'm here. If you're looking for a player who cares about your world lore and actually wants to know why the grumpy tavern owner is moody, I'm your guy. I'm not really here to crunch numbers into oblivion or argue over combat grid geometry. I'm way more interested in the messy, collaborative storytelling part of things. Think less tactical strike force and more chaotic found family trying to survive the plot. So yeah, if your table leans heavily into deep roleplay, exploring the setting, and letting characters actually talk to each other before things inevitably blow up, we'll probably get along great. My schedule is very flexible except for sleep time.
et Estonian
DND5E
Dungeons & Dragons 5E
DND5.5E
Dungeons & Dragons 5.5E (2024)
...
Austin
Holger
See on lihtsalt test. Ärge pange tähele. Katsetan uut viisi kuidas süsteemid ja mängud kuvatakse.

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