Games shape behavior by manipulating agency, providing structured goals, and creating harmonious actions. According to the context, games are unique in that they operate within the medium of agency itself. Game designers define what abilities players have, the obstacles they will face, and the goals they will pursue, thus creating an alternate self for the player (00:32:00). This controlled environment allows players to engage in purposeful actions that align perfectly with their abilities and challenges, creating a sense of harmonious action (00:37:00). Additionally, games encourage players to adopt goals attached to specific constraints, which often mirrors real-life scenarios but in a more conscious and chosen manner (00:33:30). This can make games a powerful tool for exploring different facets of agency and decision-making, but it also poses the risk of hyper-focusing on goals and neglecting other important aspects along the way (01:06:30).