"Borderlands 4" Launches Limited-Time Mini-Event "Horror Experience in Kairo!" Featuring New Legendary Gear from World Boss Battles
Note: the original Japanese article can be found at:
https://www.4gamer.net/games/830/G083016/20251024027/
Editorial Department: maru | 2025/10/24 05:25 (UTC)
2K and Gearbox Software have launched the limited-time mini-event “Horrors of Kairos” in Borderlands 4 (PC / Nintendo Switch 2 / PS5 / Xbox Series X|S) on October 23, 2025. The event will run until November 6.
During the event, all World Boss battles will feature a weather change to “Blood Rain.” Defeating bosses grants players the chance to obtain new Legendary gear such as the Tediore-made Legendary Assault Rifle “Marmar” and the Order-made Legendary Grenade “Skrye.”
Additionally, two exclusive items are being distributed: the Vault Hunter headpiece “Make Your Decision,” available for all Vault Hunters (Vex, Raf, Ammon, Harlow), and the weapon skin “Hex Appeal,” which can be equipped on any weapon. These skins can be unlocked by entering the SHiFT code 3S6BB-ZXT93-KRT3W-BT3T3-JW6TZ.
Furthermore, an update has been rolled out simultaneously to improve multiplayer performance, video and audio quality, and accessibility features. For details on the update, please check the official website.
A new Borderlands 4 update arrives today on all platforms, introducing our Seasonal Mini-Event Horrors of Kairos, and more! ?
Check out the notes: https://t.co/nbDmwt4tXz pic.twitter.com/Als3yzGdPU
— Borderlands (@Borderlands) October 23, 2025
Official Borderlands 4 Website
K/Take-Two Interactive Japan
The limited-time free mini-event “Horrors of Kairos” in Borderlands 4 is currently live!
On Thursday, October 23, 2K and Gearbox Software launched the in-game limited-time free mini-event “Horrors of Kairos” for Borderlands 4.
From Thursday, October 23 to Thursday, November 6, players can battle World Bosses under eerie weather conditions with blood raining from the sky. Victorious players will have a chance to obtain new Legendary gear such as the Tediore-made Legendary Assault Rifle “Marmar” and the Order-made Legendary Grenade “Skrye.”
Moreover, by using the following SHiFT code, players can unlock:
- The Vault Hunter headpiece “Make Your Decision,” usable by all Vault Hunters (Vex, Raf, Ammon, Harlow)
- The weapon skin “Hex Appeal,” which can be equipped on any weapon
3S6BB-ZXT93-KRT3W-BT3T3-JW6TZ
In addition, an update has been released alongside the event, featuring various improvements to stability and UI enhancements, fixes for multiplayer issues, and enhanced visual, audio, and accessibility features. The update also includes important balance adjustments as well as bug fixes related to Vault Hunters, loot systems, gear, achievements, and other reported issues—further improving gameplay experience during late-game content and mission flow.
For the latest news on Borderlands 4, visit https://2kgames.jp/borderlands4_jp/. We also welcome you to follow us on YouTube, Facebook, X, Instagram, and TikTok.