Resumen: The use of game-related assessments (GRAs) in personnel selection is increasing. However, the type of GRA under investigation should be considered. This study focuses on game-based assessments, which closely resemble leisure-oriented videogames. We specifically examined a serious game that assesses personality traits (assertiveness, sociability, tolerance, and rules). We analyzed its predictive validity, applicant reactions, and the impact of personal and job-related factors on scores. The study included 182 participants who played the GRA and completed a Big Five questionnaire. Findings revealed that the game predicts adaptive performance, offering incremental value over the Big Five (ΔR2 = .107). Additionally, candidates reacted more positively to the GRA in terms of comfort and fit, although the effect size was small (d = -0.1757 and -0.3119, respectively). Relating to personal and job-related characteristics, only job experience significantly affected the assertiveness score, albeit with a small effect size (d = -0.3870). Idioma: Inglés DOI: 10.5093/jwop2023a18 Año: 2023 Publicado en: Revista de psicología del trabajo y de las organizaciones 39, 3 (2023), 169-178 ISSN: 1576-5962 Factor impacto JCR: 2.4 (2023) Categ. JCR: PSYCHOLOGY, APPLIED rank: 52 / 113 = 0.46 (2023) - Q2 - T2 Factor impacto CITESCORE: 4.9 - Social Psychology (Q2) - Organizational Behavior and Human Resource Management (Q2)