The Atomic Heart crossover is finished. "Polymerized Dreams" ran on Global from July 23 to August 13, 2026, closing the day the 3.7 anniversary patch launched, and The Twins and the free 4-star Nora left with it. Bluepoch has announced no rerun. If you arrived here holding Clear Drops for a crossover banner, stop holding: the banner is gone and Version 3.8 is live as of today.
Does a collab unit ever come back here?
There is exactly one precedent, and it is not encouraging.
| Collaboration | Global run | Headline unit | Returned since? |
|---|---|---|---|
| Assassin's Creed | August 7 to September 19, 2025 | Ezio Auditore | No rerun in the 13 months since |
| Atomic Heart | July 23 to August 13, 2026 | The Twins | No rerun announced |
The Assassin's Creed crossover was the game's first, it added Ezio on the "A Prophet Guided by Time" banner alongside Kassandra and a free Alexios, and it closed on September 19, 2025. Thirteen months later none of those units has had a second channel. That is one data point rather than a policy, and Bluepoch has never published a rule about collab reruns either way, so treat it as the base rate and not as a promise. Licensed characters also carry a complication a normal Arcanist does not: bringing Ezio or The Twins back means going back to Ubisoft or Mundfish for permission, which is why crossover units across the genre tend to stay gone.
Planning around a return is therefore a bad bet. Planning around the current banner schedule is a good one.
What The Twins actually were
Worth knowing what you missed, because the mechanic was the interesting part.
Every Arcanist in Reverse: 1999 lives under a single Afflatus. The six-way Beast > Plant > Star > Mineral > Beast wheel, with Intellect and Spirit trading blows, is the spine of the combat system: you counter-pick, you dodge bad matchups, and you build a roster wide enough to answer whatever the Limbo and Mane's Bulletin endgame throws at you. One Afflatus per unit had been a hard rule since launch.
The Twins broke it. Summoned as a pair, occupying one roster slot, they carried two Afflatus identities at once, Mineral and Star, shifting which they presented based on how you played them. In a game whose entire difficulty curve is built on type advantage, a unit that can be the correct Afflatus on demand is a structural answer to counter-pick pressure, and it is the sort of design a developer hands to a collab precisely because it would warp the standing meta as a permanent, farmable addition. Our Afflatus and team-building primer covers why that flexibility is the scarcest resource in a Limbo roster.
The rest of the run, for the record: over 110 free pulls plus a free monthly subscription, Nora handed out as a free 4-star, the "Back to Chelomey" exploration mode set in Facility 3826, and a 100-pull milestone on The Twins' banner that let you take either a copy of them or a 6-star selector from the Standard Pool, with further rewards at 160, 220 and 280 pulls.
One detail we still will not state: The Twins' rarity. Coverage split at the time, with at least one outlet calling them a 5-star while the 100-pull milestone offered them against a 6-star Standard Pool selector. We never found a primary source that settled it, so the field stays blank on our banner page rather than guessed. NEEDS_REVIEW.
The sync question, answered by 3.8
When this collaboration launched we called the release model the quiet headline. It was the game's first globally synchronized version update: CN and Global opened "Polymerized Dreams" on the same day, killing the spoiler gap that has defined this game's community since launch. We asked then whether sync would become the new normal.
It did not. Version 3.8 "The Temporal Scale" opened on Global today, September 24, 2026. Its headline unit, Everecho, debuted on the Chinese server on June 11, 2026. That is a gap of 105 days, which is not a regression to the old pattern so much as a confirmation that the old pattern never went away: 105 days is the same CN-to-Global gap we have been measuring all year in our CN to Global tracker, and it is precise enough that we used it to forecast the September 24 date before Bluepoch announced it.
So the synchronized release was a one-off built for the crossover, not a change of policy. The plain reading is that Bluepoch synced the servers because a licensed partner wanted one global marketing moment, and went straight back to the staggered schedule afterwards. Useful to know if you were expecting CN news to stop being a spoiler.
If you were saving for it
The pulls you banked are not wasted, they are just aimed at the wrong version now. Two Mineral 6-stars arrived with 3.8 today:
- Everecho headlines Phase 1 on "Speak and the Past Will Echo" through October 15. She is a Conduit healer who buffs while she sustains, so she is the pull if your Conduit core has been leaning on a 5-star for healing.
- Cornerstone takes Phase 2 from October 15 to November 5. Riposte archetype, built as the damage carry for Riposte teams, and the bigger swing of the two.
Full verdicts on both, plus rate-up 5-stars and the exact windows, are on the Reverse: 1999 banner schedule. If your account is thin enough that neither is the right call, the beginner's guide covers the pulls that make everything else work, and the codes page is worth a pass at every version turnover.
