Inside (stylized as INSIDE) is a puzzle-platformer adventure game developed and published by Playdead in 2016 for PlayStation 4, Xbox One and Microsoft Windows. Playdead began work on Inside shortly after the release of Limbo, using Limbo's custom game engine. The team switched to Unity to simplify development, adding their own rendering routines, later released as open-source, to create a signature look. The game was partially funded by a grant from the Danish Film Institute. Inside is a puzzle platformer. The player character is an unnamed boy who explores a surreal and mostly monochromatic environment presented as a 2.5D platform game. The game is dark, with color used sparingly to highlight both the player and certain parts of the environment. The game is also mostly silent, with the exception of occasional musical cues, the boy's vocals, dogs barking, equipment and sound effects. The player controls the boy who walks, runs, swims, climbs, and uses objects to overcome obstacles and progress in the game. The boy gains the ability to control bodies to complete certain puzzles, a mechanic that IGN's Marty Sliva compared to a similar mechanic in The Swapper. At various points in the game, the player may discover hidden rooms containing glowing orbs. If all the orbs are deactivated during a playthrough, the player unlocks the game's alternate ending. Released in 2016 Genre: Adventure, Puzzle-Platformed Platforms: Xbox One, Windows, Playstation 4, Nintendo Switch, iOS