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.
SoWhen?, a CreaTech company founded in 2010, has its own R&D laboratory and virtual production studio. We have internalized all the necessary expertise to guide our clients in innovating their communication. We offer end-to-end services, from creative concepts to the deployment of physical or virtual experiences, both long-term and event-based. We leverage market technologies and develop our own technological components to optimize production (saving time and money) and innovate by integrating them with Unreal Engine.
We create, for example, for our clients:



The productions we have completed in recent years caught the attention of Unreal Engine’s team, who appreciated the quality of our work, the innovations we introduced, and the impact of these experiences on our clients. This is why EPIC invited us to apply for their partnership program, which offers multiple benefits to the SoWhen? team and our clients. To secure this selection, we had to undergo technical tests and evaluations, present our latest productions in detail so that the Unreal Engine teams could assess not just the results but also our working methods. Our clients also rated our services on various aspects, including relationships, service quality, collaboration with their teams, and the overall delivery quality.
We are the only company in France to have obtained this accreditation, and around 70 worldwide.
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
Terms of Use
SoWhen?
The Team
Jobs
Our R&D lab
The SoWhen? Experience
Virtual Studio
Kits
Originals
Productions
Our news
Awards
Blog