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For a first watch, finish Steins;Gate episodes 1–24, then watch episode 23β, followed by all 23 episodes of Steins;Gate 0. Keep the original episodes 23 and 24 together: 23β is an alternate episode 23 that sets up the branch explored in Zero, not a replacement for the original episode.
Recommended first-watch order
- Steins;Gate (2011), episodes 1–24. Watch the normal episodes 23 and 24 as the original series finale.
- Episode 23β — “Open the Missing Link: Divide by Zero” (2015). This alternate episode introduces the path that leads into Steins;Gate 0.
- Steins;Gate 0 (2018), episodes 1–23. This is the main series for the alternate branch.
This order preserves the original show’s complete ending before opening the alternate route. The official STEINS;GATE 0 site describes Zero as a legitimate sequel; its story takes place in a beta world line after Okabe gives up on saving the woman he failed to save. Episode 23β supplies the branch context.
![Steins;Gate: The Complete Series [Blu-ray]](https://m.media-amazon.com/images/I/61Zw1JI-gRL._SL160_.jpg)
![Steins;Gate: The Complete Series [Blu-ray]](https://m.media-amazon.com/images/I/51XQLazVMIL._SL160_.jpg)
What to do with the optional extras
The extras add material, but you do not need them to move from the original series to Zero.
- “Egoistic Poriomania,” the original-series OVA (often numbered episode 25, 2012): Optional; watch after original episode 24.
- Steins;Gate: The Movie — Load Region of Déjà Vu (2013): Optional follow-up to the original anime; place it after the OVA if watching both.
- Steins;Gate 0 OVA (2018): Optional side story; watch after Zero‘s episode 23.
For the central story, watch the original episodes 1–24, episode 23β, and Steins;Gate 0 episodes 1–23. Episode numbering can differ between catalogs, so use the episode title when available.
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Why some lists put 23β in the middle
A published alternative is to watch the original episodes 1–22, then 23β, then all of Steins;Gate 0, and finally the original episodes 23–24. This foregrounds the branch chronology, but it postpones the original finale until after another 23-episode series. It is a valid preference for a chronology-led rewatch, not a required first-watch sequence.
The apparent contradiction comes from treating two different episode 23s as though one simply replaces the other. The regular episode 23 and episode 23β serve different routes: the regular episode belongs to the original episodes 1–24, while 23β opens the alternate route developed in Zero.
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![Steins Gate: The Complete Series [Blu-ray, Collector's Edition]](https://m.media-amazon.com/images/I/31B4DbQhZhL._SL160_.jpg)
- Complete Series
How the series is numbered
The original television series has 24 episodes. The official movie-project site announced the series as “TV版全24話” (all 24 TV episodes), and its 2015 Complete Blu-ray Box announcement also identifies all 24 TV episodes as part of the collection. That count refers to the normal original run; episode 23β is a separate alternate episode, and Steins;Gate 0 has its own 23-episode run.
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