I. Introduction
Games are voluntary, playful, and pleasurable activities comprising rules, themes, and worlds previously defined according to the established dynamics. Gamers see themselves as part of fictional worlds and plots that are created to engage and motivate users [1], [2], [3]. Games are the result of the composition of elements that, depending on how they are combined, can provide pleasant experiences to users through the narrative [4], the set of mechanics [5], the dynamics implemented, and the emotional design of games [6], [7]. The combination of game elements (e.g., points, levels, rules, audio/visual elements, and virtual economy) can influence or define the game's classification or genre [3], [8]. Due to the possibility of different combinations, the gaming market has a significant variety of genres, which attracts players according to their style preferences and personal characteristics [9], [10], [11], [12], [13].