The second modality, Mitspielen or: Cooperating and Competing, focuses on the relations and mutual adaptations between the different actors. Central questions include the specific possibilities and conditions of playing with particular digital and analogue game materials and of playing together, of cooperating, and/or competing within specific gaming environments. We ask which advantages and effects result in an increase or decrease in (self-)adaptation, personalisation and tailoring, and how different degrees of sensory engagement, immersion, self-reflection, and media awareness can impact gaming processes and outcomes. Playing together also comes along with playful (or gamified) learning programmes to encourage responsible behaviour that can be measured, controlled, and predicted. Thus, it is not only about human players, but also about measuring devices, control systems, knowledge and skills, and about spectators or researchers who potentially become players and workers.