During the Future Games Show’s Best of gamescom 2025 showcase, Parisian developer Opus Major premiered a new gameplay trailer for MAJJAM, illustrating the musical mechanics that fuel the upcoming PvE co-op adventure. All music heard in the trailer comes from in-game Jam cards: the unique musical powers wielded by the game’s playable heroes.
Each character is inspired by and embodies a particular musical instrument and style, and only their collective Jamming power can save their world from an evil fog that silences all sound. The latest look at MAJJAM is sure to strike a chord with music-loving gamers everywhere
MAJJAM Gameplay Trailer
In the lively world of MAJJAM, players interact with each other and their environment almost exclusively through rhythm and melodies. Music is the world’s life force, a sustaining energy that stands as the only defense against the Kodé: a corruptive, encroaching presence pushing fog tides where death and silence rule.
Players harness musical energy by Jamming, combining the unique abilities of their character’s Jam card alongside those of their allies to fight back against the Kodé, discover and solve puzzles, and reshape the world around them. No instrumental expertise is required to play these melodies and rhythms, giving all players the opportunity to become powerful musicians!
Each character’s Jam card is supported and augmented by a system of musical abilities that players can unlock, collect, and store throughout the game. Each ability has a specific power that further deepens the player’s skill set and ability to influence and explore their environment. Created by a team of developers with their own musical talents and inspired by their own jam sessions, MAJJAM is an ode to the communal power of both music and gaming!
MAJJAM Key Features:

The Fun & Creativity of Jamming for All
MAJJAM captures the joy and spontaneity of a jam session, for musicians and non musicians alike. The game’s technology auto-harmonizes all player performances online, with no noticeable latency, and players work together through intuitive gameplay mechanics and communal creation rather than the beat-matching mechanics featured in rhythm games.
A Shifting, Musical World
The vibrant, dynamic world of MAJJAM responds to player input Jamming sequences, revealing new locations, and even uncovering hidden secrets. By combining their musical expressions with others, players can reshape the world around them, unlocking new areas, discovering powerful melodies, and encountering surprising obstacles.
A Dynamic & Dangerous Fog System

Kodé isn’t just an antagonist. Its power is materialized in the game as a massive environmental threat; a lethal active force that defines the boundaries of exploration. Players can beat back its fog through their musical powers, and explore new zones that used to be restrained under the fog tides.
Social Experiences with Personal Customization

Whether you enjoy strumming some chords, hearing delightful woodwind melodies or you’re a percussion-addict, MAJJAM offers multiple, colourful character types for players to select, each with their own musical capabilities and distinct look. The key to maximizing their power comes from jamming with others, cooperatively creating with fellow players to craft a perfect harmony and exponentialize the effects on the world of MAJJAM.
For more information about MAJJAM, join the Discord server, wishlist the game on Steam, and follow the official social media accounts on TikTok, X and Instagram. If you’re interested in participating in an upcoming playtest of MAJJAM, sign up on majjam.com and join the conversation on the game’s official Discord community!
Strike the Final Note
With its blend of rhythm, co-op adventure, and a vibrant world shaped by music, MAJJAM is already tuning up to be one of the most original titles of 2025. If you love immersive storytelling and fantastical worlds, explore even more adventures in our online bookshop filled with fantasy stories and novels waiting to be discovered.