Richard N. Landers, Gustavo Fortes Tondello, Dennis L. Kappen, Andrew B. Collmus, Elisa D. Mekler, Lennart E. Nacke. Defining gameful experience as a psychological state caused by gameplay: Replacing the term 'Gamefulness' with three distinct constructs. International Journal of Man-Machine Studies, 127:81-94, 2019. [doi]
Abstract is missing.