Abstract
The mobile game industry is increasing in market share and becoming saturated with hundreds of products. This rises competition to gain user's satisfaction for fun and easy to use mobile games. In fact, the main concern of mobile game development is the usability due to smart phones restrictions (screen size, processing power, storage, etc.). To identify such usability problems, heuristic evaluation is applied. In this paper, we evaluated a popular mobile game, "Hay day", using heuristic evaluation conducted by six evaluators to examine 44 heuristics. The results of this study provide insights to game developers in order to improve usability.