Fire is a puzzle game where you interact with objects in many locations as a caveman named Ungh, to finally reach your goal of finding fire. In the first level, Ungh has a vision where he sees trapped, glowing, creatures, and his secondary goal is to free one of these characters in each area, before he can proceed. The game is played in a style reminiscent of the Gobliiins series, where puzzles come in the form of clicking on objects in order to have Ungh interact with, or to have your cursor change something about the environment. After a number of these types of puzzles have been solved, Ungh can collect the creature, who is always out of reach, and move on to the next area. The game has a humorous story, but there is no dialog. Everything is expressed through facial animation and body language, as well as grunts and the occasional caveman gibberish.