Little Inferno is set in front of a brick fireplace, which the player uses to set various objects, such as toys, dolls, and electronics, on fire. The game encourages the player to burn any combination of objects to see how they react when lit ablaze, as most of the objects have unique properties. Little Inferno is classified as a sandbox game as it offers few traditional objectives to complete and has no states of failure. The game was designed as a satire of similarly themed video games in which the player dedicates long amounts of time to performing tasks considered to be unrewarding.