Zenless Zone Zero Steam Release and Version 2.8 Update Explained

Is Zenless Zone Zero coming to Steam?

Yes. The major platform announcement is Steam. Siliconera reports that HoYoverse confirmed during the Version 2.8 Special Program that the PC version of Zenless Zone Zero is headed to Steam with a Q2 2026 launch window ^[14].

That is a release window, not a firm launch date. MMOHuts notes that the Steam announcement did not include a specific date for Valve’s platform ^[7]. Anime Corner also reports that the Steam page is live for wishlisting and that the Steam release will support cross-platform data compatibility ^[13]. Siliconera adds that Steam Advance Testing will be held ^[14].

What launched in Version 2.8?

Version 2.8 is titled “New: Eridan Sunset” and launched on May 6, 2026 ^[13][1]. The update is framed by multiple reports as the end of Season 2: MMOHuts calls it the Season 2 wrap-up, while Anime Corner describes it as the final chapter of Season 2 ^[7][13].

For story-focused players, the main addition is the Season 2 epilogue content. Game8 says Version 2.8 includes part two of the Epilogue Main Story, and Siliconera describes “New: Eridan Sunset” as the Season 2 Epilogue quest ^[1][14].

New Agents: Promeia and Starlight – Billy

The headline playable additions are Promeia and Starlight – Billy. MMOHuts identifies both as new S-Rank Agents, with Promeia listed as an S-Rank Ice Anomaly Agent and Starlight – Billy listed as an S-Rank Physical Rupture Agent ^[7].

Sakura Index describes Starlight – Billy as an upgraded Cunning Hares member entering the update alongside Promeia ^[6]. Game8 also lists Promeia and Starlight Billy as featured Version 2.8 characters ^[1].

Gameplay, enemies, and cosmetics

Version 2.8 is not just a character update. Sakura Index reports that it introduces a new enemy attribute based on Wind, along with a new outfit for Hoshimi Miyabi ^[6]. MMOHuts also reports a new enemy attribute, a new combat interaction, a Miyabi outfit, and system changes as part of the update ^[7].

Some coverage additionally mentions events and system optimizations, but the details vary by report ^[9]. The most consistently supported additions are the Season 2 finale content, Promeia, Starlight – Billy, the Wind-based enemy attribute, the new combat interaction, system changes, and the Miyabi outfit ^[7][6][1].

Is the Steam launch part of Version 2.8?

Not exactly. The Steam release was announced alongside the Version 2.8 news, but the timelines are different: Version 2.8 launched on May 6, 2026, while the Steam version has a Q2 2026 release window and no exact date in the available reports ^[7][14].

For current players, Version 2.8 is the immediate content drop. For players waiting on Steam, the practical takeaway is to wishlist the game on its Steam page and watch for Steam Advance Testing details as HoYoverse shares more ^[13][14].