This paper describes an experiment with gifted secondary school students from fifth to eighth grade. The students were presented with a strategy game and challenged to solve different tasks together. This was done by having the students try out the game in different ways, model, and print their own version of the game in 3D and develop a life-size game environment, where the students became pieces in the game. These tasks have required interdisciplinary and out-of-the-box thinking and experimentation with the game. The focus of this paper is to evaluate the use of games as a catalyzer for independent development of gifted students' abilities. During the experiment the students were observed and video recorded. The recordings were analyzed afterwards to examine how the students approached the task of finding winning strategies and which competences were trained during the experiment. The results show that the students' understanding of winning strategies evolved from an idea of finding a simple trick that always works to a concept of recognizing situations where a specific approach is advantageous. Their approach was simultaneously refined, going from a randomized testing, to a systemized search for specific winning situations. The use of previous knowledge was clear, as they simply tried to implement their former strategies, obtained by playing simpler versions of the game to the more advanced games and modified these strategies as they were proven ineffective. They used their math skills to analyze the winning possibilities by describing the winning characteristics as binary outcomes and calculated the winning possibilities. During this work, the students trained not only their logical reasoning, problem-solving, and argumentation skills, but also had to deal with social skills such as teamwork, engagement, decision-making, communication, and organization as well. Creativity played a very important role and was shown by the students through their many different approaches. The analysis show that working with games can motivate the students to develop their abilities independently by defining challenging questions and tasks themselves and solve them cooperatively or individually.