Abstract Mobile games are relatively new industry, and their relevance on the game markets are rising. At the same time, it is very competitive market, as new games are coming out by hundreds every day. The challenges for the new game development come from the creative process and the human factors on how to make the game appealing. In this research, we study the use of test groups as part of new mobile game and concept development process in the early phases. They were used to complement the testing automation at the development phases when use of analytics was not yet possible. Six separate feedback collection sessions were arranged using different methods. The paper presents the main learnings of each used method, the perceived usefulne...