Y Deis: Story, Cast and Series Facts
Y Deis (2025): Series details, synopsis, cast and season dates from TVmaze.
Story and premise
At the heart of Y Deis is a unique blend of general knowledge, skill, strategy - and a little bit of luck. Three teams of two go head-to-head across several rounds, building their prize pot through quick thinking and smart play. Only one team makes it to the final, where they face a high-stakes quiz against the clock to claim the Jackpot.
Series details
- Title: Y Deis
- Format: Game Show
- Language: Welsh
- Premiere date: 2025-11-26
- Status in TVmaze: Running
- Network listed by TVmaze: S4C
- Network country: United Kingdom
- Typical episode runtime: 25 minutes
- TVMaze ID: 87896
Cast and credited roles
- James Williams — Presenter
Seasons in the TVmaze catalogue
- Season 1: premiered 2025-11-26; final listed air date 2026-03-25.
Source and licence
Adapted from Y Deis on TVmaze. The synopsis is reproduced as plain text; catalogue facts, cast and season records are selected and reformatted. This adapted text is available under CC BY-SA 4.0, following the TVmaze API licence. Network and web-channel credits identify the service listed in this source; they do not establish current streaming availability.
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