The baby is possessed by a demon; if he gets too agitated, he may teleport or transform, requiring you to find specific items (like a "special" diaper) to calm him.
Summary
The "portable" aspect typically refers to the Android and iOS versions of the game: the baby in yellow v192a portable
Overview
Right-click the downloaded ZIP or RAR file and select Extract to "TheBabyInYellow_v192a" . Do not try to run the game from inside the compressed folder; it will cause asset loading errors. The baby is possessed by a demon; if
Installation & system requirements (reasonable defaults for portable Windows build) change his diaper
You play as a series of unnamed babysitters. Your job seems simple: feed the baby, change his diaper, and put him to bed. However, the baby (known simply as "The Baby") is actually a manifestation of a Lovecraftian deity called , also known as The King in Yellow .