Objective: to validate Ludic-quest construct and reliability to assess game playfulness, through latent factors in gameplay, perception of learning and emotions in the game. Methods: a cross-sectional study to validate the instrument’s psychometric properties. 247 people responded to the questionnaire after a match in the game Violetas. Exploratory Factor Analysis, using KMO (>0.7), Bertlett (p=0.005), Varimax and factor loading (>0.6). Reliability by Cronbach’s alpha (>0.6). Results: in gameplay/learning, KMO=0.859, Bertlett significant. The eigenvalue indicated four factors (reflections; immersion; challenges; aesthetics), 10 retained variables. In the factor analysis of emotions: KMO=0.817; Bartlett p=0.000. Extraction of four factors (pleasure; ostraenie; tension; fun), 10 retained variables. The 20 validated variables contain reliability (Cronbach’s alpha=0.716). Conclusions: the eight validated factors centralize playfulness in health game production, composing a reliable playfulness assessment instrument for use in research.