Table 1: Game factors.

FactorsDescriptionSources

Game goalsGame designer provides what type of experience for players 
Players pursue game goals
[8, 1417, 6063]
Game mechanismRefers to the methods prompting players to achieve the designer goals and enables smooth functioning of the virtual world[16, 17, 60, 61]
InteractionPlayer operations that trigger the computer to generate related responses, including the interactions and conflicts between players and computers[8, 16, 1821, 60, 62, 64]
FreedomAn open game system that allows for player autonomy, including individual services such as the avatar[8, 61, 62]
Game FantasyRefers to environmental contexts that provide virtual world imagery[28, 30, 61, 65]
NarrativeDescribes what occurs in the virtual world[16, 17, 30, 60]
SensationMultimedia presentation of the virtual world[17, 19, 28, 30, 61]
Game valuePromotes players to increase their game motivation[8, 16]
ChallengesRefers to player efforts toward the game or personal goals[8, 16, 17, 19, 61, 62]
SocialityThe interaction between people through the game system including communication, cooperation, competition, and conflict[15, 16, 19, 47, 62, 63]
MysteryRefers to providing a novel experience for players, including curiosity and exploration[15, 47, 61]