The Yellow King RPG

The Yellow King RPG is a GUMSHOE reality-horror TTRPG where Carcosa, the Yellow Sign, and a corrupting play echo across Paris, an alternate war, a post-regime aftermath, and the present day.

At-a-glance

Reality-horror GUMSHOE campaign - four linked eras - Carcosa, the Yellow Sign, and identity echoes - 2-5 players + Director - best for investigative horror with changing frames

Genres:
Cosmic Horror Historical Horror Modern Mystery and Investigation Supernatural
Systems:
GUMSHOE
Mechanics:
Campaign Character Customization Classless Narrative-Driven Resource Management Skill-Based
Themes:
Dark Mature Themes Political Psychological
Decision Tags:
One-Shot Friendly Rules Medium
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The Yellow King RPG

The Yellow King RPG is best for groups that want investigation to feel like reality coming apart instead of only a chain of occult clues. It uses GUMSHOE to keep discoveries moving, then stretches the campaign across four connected settings: Belle Epoque Paris, an alternate 1947 war, a post-regime North America called Aftermath, and a present-day frame where the unreal has already started leaking through.

Choose it if your table likes linked mysteries, identity pressure, impossible art, political horror, and a campaign structure where each era changes what the group thinks the threat is. Avoid it if you want one stable setting, tactical fights, or a light horror game that can be improvised with almost no preparation.

What the game is

The Yellow King RPG is Robin D. Laws' GUMSHOE reality-horror TTRPG for Pelgrane Press. It is inspired by Robert W. Chambers' The King in Yellow stories and centers on Carcosa, the Yellow Sign, a corrupting play, and an alien royalty whose influence bends art, memory, history, and political power.

The game is published as four 192-page core books, each built as a full campaign frame rather than a simple chapter. Paris begins with American art students in the 1890s. The Wars shifts to soldiers in an alternate European war in 1947. Aftermath follows former partisans after a Carcosan-backed dictatorship falls. This is Normal Now brings the threat into a recognizable present day.

Publication history and current line

Pelgrane funded the game on Kickstarter in 2017, where 2,288 backers pledged 167,341 GBP. The current Pelgrane store sells the books individually and as a bundle, with print and PDF options visible as of September 1, 2026.

The line is still visible in Pelgrane's current catalog and article stream. Support products include Absinthe in Carcosa, the game bundle, Legions of Carcosa, and smaller scenario releases. That makes it a live, supportable catalog entry rather than an orphaned crowdfunding artifact.

What you need to play

The cleanest starting point is one of the core books, chosen by campaign frame. A group that wants the full intended arc should consider the core set or bundle, but a table can also start with Paris if the appeal is fin-de-siecle art horror, The Wars for soldiers and battlefield unreality, Aftermath for post-revolutionary political horror, or This is Normal Now for contemporary weirdness.

The DriveThruRPG listing is useful for PDF buyers and review signals. The official Pelgrane product pages are better for seeing the current print/PDF product structure and support line.

Core rules and play structure

The rules use GUMSHOE, so the game inherits the same clue-forward design family as Trail of Cthulhu and Night's Black Agents. Investigative abilities keep necessary information moving when the characters apply the right expertise in the right scene. General abilities, pools, and tests handle risk, violence, pursuit, stability, and moments where competence can still fail under pressure.

What distinguishes The Yellow King RPG is not only clue access. The game is built around reality horror and linked identity. The table watches patterns, symbols, places, and political forces mutate across eras, then has to decide how much continuity exists between characters who may not be the same people but are clearly caught in the same Carcosan machinery.

Characters and campaign frames

Character identity changes with the setting. In Paris, characters are art students pulled into decadence, paranoia, and impossible influence. In The Wars, they are soldiers trying to survive an alternate conflict shaped by supernatural forces. In Aftermath, they are people with revolutionary skills trying to live after tyranny. In This is Normal Now, they are ordinary people discovering that ordinary reality is no longer a reliable premise.

That structure gives the game strong campaign depth, but it also asks for buy-in. Players need to enjoy reincorporation, symbolic echoes, and changes in premise rather than expecting one stable party to progress through one conventional setting.

Signature mechanics and table feel

The signature experience is a mystery campaign where evidence does not only solve a case. It changes the frame of reality. The Yellow Sign, Carcosa, the suppressed play, and recurring historical distortions give the Director material that can echo between campaigns without turning into a simple lore dump.

At the table, play tends to feel investigative, eerie, and interpretive. Scenes can move through salons, battlefields, interrogation rooms, occult archives, political offices, and modern uncanny events, but the recurring question is similar: what pattern is Carcosa imposing, and what does resisting it cost?

Running the game

Director load is moderate. GUMSHOE helps with clue delivery, but this is still a campaign of tonal control, scene framing, motif management, and era shifts. It rewards a Director who likes prepared mysteries, recurring symbols, handouts, and the slow pressure of making players wonder whether their characters' memories, institutions, and artistic impulses can be trusted.

It is not the easiest first GUMSHOE game. Trail of Cthulhu is cleaner if the table wants one era and a more classic investigation spine. Night's Black Agents is cleaner if the group wants a mission engine. The Yellow King RPG is strongest when the group wants the stranger long-form structure.

Campaign and one-shot fit

The four-book format makes campaign play the natural use case. The game can run one-shots, and Pelgrane tags Yellow King material for one-shot use, but the full value comes from watching Carcosa recur across frames. A single session can showcase the tone; a campaign can make the pattern matter.

For short play, start with a focused mystery in one frame. For long play, use the era sequence as the main promise rather than trying to smooth it into a normal continuous campaign.

Reception and awards

The game's reputation is strongest around ambition, production design, and the way it uses GUMSHOE for reality horror instead of another straightforward Mythos investigation. The 2020 ENNIE Awards nominated the core game for Best Production Values, while Absinthe in Carcosa won Gold for Best RPG Related Product. Reviews from Cannibal Halfling, The Gaming Gang, and Illuminating Games tend to emphasize the game's striking premise and unusual campaign shape, with caveats around complexity, specificity, and the amount of Director and table buy-in it requires.

Where it is strongest

  • Reality horror that feels different from standard Lovecraftian investigation.
  • Four distinct campaign frames that let Carcosa echo through history and identity.
  • GUMSHOE clue flow for groups that want interpretation and consequence more than clue bottlenecks.
  • Strong fit for tables interested in art, politics, war, aftermath, memory, and unreliable normality.

Where it can frustrate groups

  • The multi-era structure can feel demanding if the group wants one continuous party and setting.
  • Director prep still matters; GUMSHOE does not remove the need for careful mystery and tone management.
  • Combat and tactics are secondary to investigation, atmosphere, and interpretation.
  • The title and source material can create literary-horror expectations that need clear table calibration.

Content and safety notes

Expect madness, reality distortion, war horror, political violence, dictatorship, insurrection aftermath, occult influence, body horror, and psychological pressure. The game also draws from late-19th-century decadence and Chambers-inspired literary horror, so groups should set boundaries around mental-health framing, war material, coercive institutions, and historical prejudice before play.

Best starting path

If your group wants the full experiment, start with the core set and begin in Paris. If you want a narrower test, choose the one era that excites the table most and run a compact mystery there before committing to the linked campaign. Use Absinthe in Carcosa when you want the Paris frame to become more tactile and handout-driven.

Research notes

Last checked: September 1, 2026.