This study examines brand customization in advergames and its effects on brand memory, game enjoyment, and attitudes gamers form toward the embedded brand. This study also tests for interactions between individuals’ locus of control and brand customization on the measured variables. A 2(customization) x 2(locus of control) experimental design was used. Subjects (N=60) were invited to a laboratory and the car racing game Gran Turismo 3™ was used as the advergame. Participants completed a questionnaire before and after treatment exposure, t-tests were calculated to test the hypotheses, and ANOVAs were run to examine all research questions. Findings suggest that individuals who customize the brand during gameplay recall the brand almost four times as much as individuals who don’t customize the brand. Results also reveal that subjects under the no customization condition negatively described the brand twice as much as subjects under the customization condition. Furthermore, a significant interaction between individuals’ locus of control and brand customization on brand recall was detected. There were no significant differences in attitude toward the brand and game enjoyment due to brand customization. Finally, the data didn’t demonstrate significant interactions between individuals’ locus of control and brand customization for game enjoyment and brand attitude. / text