Halloween 2025 at Koezio Cergy: Ritual, an immersive experience combining cults, riddles and thrills

Will you walk through the door or become the next sacrifice? On October 30 and 31, Koezio Cergy Park becomes the scene of a mysterious ritual, orchestrated by a cult you can't escape. At the heart of this 90-minute immersive experience, entitled Ritual, you don't come as a spectator, but as a participant. As soon as you cross the threshold, the tone is set: your arrival is no accident, you've been summoned. An ancient sect awaits you, its members lurking in the shadows, watching your every move. The atmosphere, inspired byurban exploration, plunges you into a realistic, oppressive setting, where the walls seem to whisper warnings.

Visitors work in teams of 2 to 5 players, united by a single goal: to escape before it's too late. Each district of the building has its own trials and tribulations: vertiginous courses, traps to avoid, riddles to thwart and physical challenges that will put your nerves to the test. At each stage, the tension mounts, the scenery tightens, the shadows grow heavier... You'll soon realize that, in this game, the building itself seems alive.

An adventure where cooperation is your only salvation

The experience is based on a clear principle: team spirit above all else. It's impossible to triumph alone in such an unpredictable environment. Each player has to show cool-headedness and logic if he or she is to find a way out. Communication becomes vital, decisions have to be made in a flash, and the slightest mistake can cost you your freedom.

But beware: you won't be alone. Presences are lurking, watching, waiting. Whispers draw nearer, lights flicker, and every corridor may conceal a trap or... an apparition. This total immersion in an abandoned setting, supported by meticulous staging, makes this Halloween evening in Cergy a sensory experience as intense as it is intriguing.

• To be read
• Halloween 2025 in Paris and Île-de-France: outings, parties, and must-see events
• This week's top deals in Paris and Île-de-France, from December 22 to 28, 2025

Thrills guaranteed... but not for everyone!

Koezio Cergy 's Halloween parties are designed for thrill-seekers, adrenaline-hungry groups of friends and teams looking for a collective challenge. It's the perfect opportunity to test your courage and cohesion in an immersive setting on the borderline between an adventure game and a horror film.

However, this experience is not recommended for under-12s, and not suitable for those who prefer a softer atmosphere or moderate thrills. Here, everything is designed to unsettle your senses, from the flickering lights to the eerie sounds to theintensity of the physical journey. If you're looking for a simple costume party, don't bother: Koezio offers much more than a game, it's an infiltration into a collective nightmare.

For this Halloween 2025 edition, places are limited and each session promises a unique experience. So, will you be able to unravel the mysteries of this abandoned place, resist the fear and get out before the ritual ends? The doors will open soon... but there's no guarantee they'll close behind you.