Aydındoğan, IremAlaçam, Sema2025-10-052025-10-0520259781665438865978147993546897816654598919798350350678979835032277497815386435949781728145334978150901883397814673531139781728118840979833158905997983315890422325-4270https://doi.org/10.1109/CoG64752.2025.11114292Associacao de Produtores de Videojogos Portugueses (APVP); et al.; IEEE; IEEE Computational Intelligence Society; Turismo de Lisboa; Universidade de LusofonaThis study introduces a novel game mechanic for 3D puzzle games based on anamorphic projection to explore impossible spaces. By using perspective-driven spatial interactions, the mechanic creates environments that challenge conventional Euclidean logic. Players advance by aligning their viewpoint with distorted projections, making perception a central element of gameplay. A usability test with 33 participants assessed the mechanic's effectiveness through a structured questionnaire focusing on six dimensions: Ease of Control, Goals and Rules, Challenge, Mastery, Curiosity, and Immersion. Results indicate high engagement and cognitive stimulation, especially in mastery and goal clarity. These findings highlight the potential of anamorphic projection to support perceptually rich and mentally engaging puzzle experiences in future game design. © 2025 IEEE.eninfo:eu-repo/semantics/closedAccess3D Puzzle GamesAnamorphosisGame MechanicsImpossible SpacePerspectiveHuman Computer InteractionInteractive Computer GraphicsAnamorphicEuclideanGame-BasedSpatial InteractionGame DesignConference Object10.1109/CoG64752.2025.111142922-s2.0-105015385244