2xserien

2xserien is a term used in media discourse to describe a format in which two parallel narrative series are produced and released in relation to each other, sharing a universe, cast, or overarching story, and often designed to be consumed together. The term is informal and lacks a single, universally accepted definition, appearing mainly in online discussions and some media studies literature.

In typical implementations, 2xserien can take several forms. One is two companion series airing concurrently with cross-over episodes or references between the two. Another is a single season structured as two interwoven storylines broadcast as two connected series. A third form features a main series and a spin-off set in the same world, with overlapping characters and events. The approach aims to deepen world-building, sustain audience engagement across multiple narratives, and create marketing opportunities, while also presenting challenges in scheduling, pacing, and audience comprehension.

Origins and usage of the term are tied to online media communities and industry explorations of interconnected storytelling, particularly as streaming platforms experiment with formats that extend possibilities for narrative and cross-promotion. While some projects have used this approach to expand audiences, others critique it for potential fragmentation, increased production costs, and viewer confusion if the two series diverge in tone or quality. Related concepts include crossovers, companion series, and parallel or dual narratives.