Inside (stylized as INSIDE) is a puzzle-platformer adventure video game developed and published by Playdead and first released in June 2016. In the game, the player controls a young boy in a dystopic world, solving environmental puzzles while avoiding death in a 2.5D sidescrolling fashion, thematically and visually following up on the 2010 monochromatic video game Limbo.

Playdead started working on Inside shortly after the release of Limbo. Initially, the company started with the same custom game engine they used for Limbo, but later switched to Unity to simplify development. They developed rendering routines to give the game a signature look and which they later released as open source. The game was partially funded by a grant from the Danish Film Institute.

Inside premiered at Microsoft's E3 2014 conference, with a planned release in 2015. The game was released for Xbox One on 29 June 2016, Microsoft Windows on 7 July, and for the PlayStation 4 on 23 August. The game received critical acclaim upon release, with some critics and reviewers calling it a worthy successor to Limbo.