Smoking is one of the leading public health problems in the world. Currently, there is no evidence-based intervention program available to help youth and young adults quit smoking. Besides the lack of high-quality research, recruitment and retention of youth and young adults are two of the most challenging aspects of the implementation and evaluation of smoking cessation interventions. We argue that limitations in current smoking cessation interventions for youth can be maximally addressed by using video games as interventions. In the current project a video game will be developed and tested on its effectiveness and mechanisms of change to help youth and young adults quit smoking.