Nowadays, video games are more popular than ever before in history. Therefore this area of digital art should be given special attention. The arrival of smart phones considerably expanded the availability of video games. Today, the user is separated from the entertaining game by few clicks on the phone screen. The aim of this thesis was to develop mechanics into a game demo. These mechanics are centered around player movement and objects that player can interact with. The player plays the role of a ball of yarn, and as the character moves, the yarn unravels. Its end is lit on fire that spreads and creates sense of danger in player. Game contains platforms and gates with ability to change direction of gravity. There are also mechanics that a...