Madness : the nightmare-inducing Lovecraft-inspired horror escape game at Unleash

Published by Laurent de Sortiraparis · Updated on April 28, 2026 at 04:21 p.m.
Unleash Escape Game, a studio just steps from the Arena Bercy, invites you to discover its new room, Madness, starting June 1, 2026. A horror escape game that promises to plunge you into your worst nightmares, we’re told… and draws inspiration from Lovecraft’s universe.

Something to plunge you into a nightmare... Unleash Escape Game, a chain of escape rooms based in Bercy, invites you to explore your dreams... or rather your nightmares, with Madness: The Marsh Heritage, a horror-adventure that drops you into a shared vision with your fellow adventurers. A experience loosely inspired by the universe of horror tales by H.P. Lovecraft.

Synopsis of Madness at Unleash Escape Game:

In Madness: The Heritage of the Marsh, players are haunted by a single, eerie dream that lures them back again and again to a ship’s hold, a menacing dwelling, and a woman dressed in black. This shared vision unsettles when Lawrence Williamson disappears, leaving only a mysterious cylinder to listen to on a phonograph. The investigation then pursues his trail across a port city gnawed by the unspeakable, as players seek to understand this nightmare and uncover a buried truth.

Note that this isn’t a traditional escape room, strictly speaking... Instead, it’s an immersive, narrative-driven investigation that unfolds like an escape game, with puzzles and exploration, but also intertwines interactions with actors. Here, you’ll mainly need to listen, observe, and analyze to understand what’s going on and reach the end of the adventure.

The experience, clocking in at about 105 minutes, delivers an intense and sometimes unsettling atmosphere and isn’t necessarily suitable for everyone. You’ll be scared, certainly... and there may be a few jump scares, but storytelling remains the main goal. For seasoned adventurers, then. It also supports 2 to 4 players, is at expert level, and is only playable in French.

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©Unleash Escape Game

In detail, the experience is strongly not recommended for anyone sensitive to strobe lighting effects, to smoke effects and oppressive atmospheres, to fear of the dark, to recent surgery, or to any medical condition that could be worsened by the experience. It’s also highly discouraged for people with severe anxiety disorders, panic attacks, significant phobias, or post-traumatic stress. The experience is off-limits to anyone under 16 or to pregnant women. And of course, you’re not allowed to touch the performers.

A slew of restrictions that should set off alarm bells about the horror woven into this adventure. Should we book at Unleash Escape Game?

Practical information

Dates and Opening Time
Starts June 1, 2026

× Approximate opening times: to confirm opening times, please contact the establishment.

    Location

    5 Rue Henri Desgrange
    75012 Paris 12

    Route planner

    Access
    Metro, lines 6 or 14, station "Bercy"

    Prices
    Par personne, équipe de 6 personnes: €31
    Par personne, équipe de 5 personnes: €35
    Par personne, équipe de 4 personnes: €40

    Recommended age
    From 16 years old

    Official website
    unleashescape.com

    More information
    Sessions at 4:45 p.m. and 7:45 p.m.

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