Game designers spend a great deal of time developing balanced game experiences. However, differences in player ability, hardware capacity (e.g. network connections) or real-world elements (as in mixed-reality games), make it difficult to balance games for different players in different conditions. In this research, adaptive time-variant minigames have been introduced as a method of addressing the challenges in time balancing as a part of balancing players of games. These minigames were parameterized to allow both a guaranteed minimum play time (the minimum time to complete a minigames to address the fixed temporal constraints) and dynamic adaptability (the ability of adapting the game during the game play to address temporal variations caused by individual differences). Three time adaptation algorithms have been introduced in this research and the interaction between adaptive algorithm, game mechanic, and game difficulty were analyzed in controlled experiments. The studies showed that there are significant effects and interactions for all three factors, confirming the initial hypothesis that these processes were important and linked to each other. Furthermore, the studies revealed that finer temporal granularity leads to less-perceptible adaptation and smaller deviations in game completion times. The results also provided evidence that adaptation mechanisms allow accurate prediction of play time. The designed minigames were valuable in helping to balance temporal asymmetries in a real mixed-reality game. It was also found that these adaptation algorithms did not interrupt the overall play experience.

"Sitting is the new smoking" and is one of the major causes of human health problems today. Swedes train the most in the world but are also among those who work  mostsedentary. Proper movement while taking 1 minute of active short breaks helps to preventfurther health problems. Cameras can detect body movements and this information can beused to do motion analysis and skeletal estimation. Furthermore, this can be used to create games that can use this detected movement and force the user to be more active whiledoing something fun.This thesis is about designing and implementing two mini-games in Godot for particular body movements using MediaPipe. Game designers for the mini-games use heuristicsfor motion-based control in games presented by Hara and Ovaska. This thesis focuses ondeveloping game control using motion control for the mini-games. The game controls areevaluated by calculating the sensitivity of how well the controls work for the games.