C. Operationalization of UX Evaluation Criteria
The understanding factor was operationalized with two
metrics: understanding of game mechanics (UM) and
understanding of game logic (UL). UM measured the
number of mechanics understood by the player out of 15
mechanics. UL measured the number of game logic rules
understood out of 10 rules in total. The values of these
metrics were measured by the game designer based on the
recorded gameplay.