Hellfest reveals its 2026 lineup and announces the release of ARTE Riff Mountain!
Hellfest announced the release date of ARTE Riff Mountain, coming on November 21st, 2025, and revealed its official cinematic trailer.

Mohamed Marouene (CEO, SoWhen?) and Yuliya Gubkina (Co-Creation Leader, Flexis) will share an exclusive behind-the-scenes look at the creation of the Flexis Virtual Universe during the conference: “𝐻𝑢𝑚𝑎𝑛𝑠, 𝐻𝑎𝑟𝑑𝑤𝑎𝑟𝑒, 𝑆𝑒𝑟𝑣𝑖𝑐𝑒𝑠, 𝑎𝑛𝑑 𝑅𝑒𝑎𝑙𝑖𝑠𝑚: 𝐹𝑙𝑒𝑥𝑖𝑠’ 𝐿𝑜𝑔𝑖𝑠𝑡𝑖𝑐𝑠 𝑆𝑡𝑜𝑟𝑦 𝑖𝑛 𝑈𝐸.”
This session will show how Unreal Engine can be a powerful engine for:
✨ Building and telling the story of a (new!) brand.
✨ Promoting products and services in an interactive and customizable way.
✨ Integrating cutting-edge technologies into traditional industries.
We will present our joint work on:
🔹 Co-creation and real-time iteration of their virtual universe.
🔹 Integration of MetaHumans to illustrate the human ecosystem, combined with markerless motion capture (The Captury) to reproduce and transmit real professional gestures.
🔹 A customization system for the virtual world.
👉 A concrete case study on how real-time 3D provides Flexis with strategic tools to achieve its objectives and support the growth of its business.

Follow our news and discover the latest articles about our business, the market, the tips we offer you…
Hellfest announced the release date of ARTE Riff Mountain, coming on November 21st, 2025, and revealed its official cinematic trailer.
ARTE Riff Mountain will be featured at Paris Games Week, with an exclusive first demo available to the public.
After introducing the birth of the project in the first episode, this Dev Diary #2 dives into a key stage of the adventure: the conception phase.
SoWhen? was invited by SGA and EPIC to present a masterclass about our Multivert studio and a keynote on our co-production ARTE Riff Mountain.
Would you like a quote?
Tell us about your projects? Receive more information?
Grab a coffee?
69-71 rue de la Fraternité
93100 MONTREUIL
FRANCE
Mentions légales
SoWhen?
L’équipe
Métiers
Notre labo R&D
The SoWhen? Experience
Virtual Studio
Kits
Originals
Nos réalisations
Notre actualité
Reconnaissances
Blog