Borderlands 4 is a 2025 action role-playing first-person looter shooter game developed by Gearbox Software and published by 2K. It is a sequel to Borderlands 3 (2019) and the fifth mainline entry in the Borderlands series. The game was released for PlayStation 5, Windows, and Xbox Series X/S on September 12, 2025 to generally favorable reviews from critics. A Nintendo Switch 2 release was announced but has been put on an indefinite pause with no future plans. Set six years after the events of the last game, the story follows a new group of Vault Hunters in the ancient planet Kairos, who join its local resistance to find the planet's Vault and overthrow the despotic Timekeeper.