Tiny Tina's Wonderlands is an action role-playing first-person shooter video game developed by Gearbox Software and published by 2K. As a spin-off in the Borderlands series and a sequel to Tiny Tina's Assault on Dragon Keep, the game is set within the world of a fantasy-themed tabletop role-playing game. The game was released for Microsoft Windows, PlayStation 4, PlayStation 5, Xbox One and Xbox Series X/S in March 2022.

Tiny Tina's Wonderlands was developed by Gearbox Software with support from Lost Boys Interactive. According to Gearbox founder Randy Pitchford, the studio has been planning to release a fantasy spin-off of the series since the early 2010s, and it had unsuccessfully pitched several fantasy projects to publishers during the early days of the studio. The game's overworld system was inspired by Japanese role-playing games such as the Final Fantasy series. Gearbox intentionally designed five maps that can only be accessed through the overworld. These maps feature their own narrative threads that are also connected to the main story. Ashly Burch returned to provide her voice for Tiny Tina, while Andy Samberg, Will Arnett and Wanda Sykes portrayed other main characters in the game.

Despite Embracer Group's acquisition of Gearbox Software in 2020, the studio continued to partner with series publisher 2K Games. The game was officially announced by 2K on June 10, 2021. It was released on March 25, 2022 for Windows, PlayStation 4, PlayStation 5, Xbox One, and Xbox Series X and Series S. The PS5 and Xbox Series X/S versions will include the Dragon Lord Pack downloadable content. Players who pre-ordered the game would gain access to the Golden Hero Armor Pack.[17] Tiny Tina's Wonderlands is the first game in the Borderlands franchise to feature full crossplay between PlayStation, Xbox, and PC; 2019's Borderlands 3 also features crossplay, but the feature was initially limited in terms of platforms that could play together, although these limitations were addressed in an update that the game received after the release of Wonderlands.

Ahead of Wonderlands's release, Gearbox made the Borderlands 2 DLC Assault on Dragon Keep available as a standalone game Tiny Tina's Assault on Dragon Keep: A Wonderlands One-Shot Adventure, released on November 8, 2021 for Windows, PlayStation 4, and Xbox One.