de Souza, M., 		e Silva, T., & 		van Amstel, F.
(2021).
 Modifiability: the collaboration between users and developers as a project quality.
In <em>Companion Proceedings of the 20th Brazilian Symposium on Games and Digital Entertainment</em>, (pp. 293-296). Porto Alegre: SBC.
doi:10.5753/sbgames_estendido.2021.19654