Representation of disability in games is important to facilitate inclusive experiences. In our work, we address this issue through an exploration of the representation of ADHD in games. First, we engage in interviews with 15 young people with ADHD to understand their lived experience of ADHD and their perspective on its integration in games. Second, we formulate considerations for the design of games that include ADHD in a way that aligns with their experience. Finally, we apply the guidelines to develop three game concepts and evaluate them with the initial group of young people to critically appraise our design considerations. The results show that nuanced representation of ADHD requires careful deliberation, that lived experience should be leveraged with care, and that game design must be mindful of the challenges associated with identifying the fine line between disability simulation and adequate representation.