Table 4.

Survey questionnaires for measuring the satisfaction level.

Game element		Question
Cognitive and physical elements
	Font size	Was the text legible with a reasonable font size?
	Button size	Was the size and location of the button appropriate?
	Sound	Were you satisfied with the sound of the game?
	Information amount	Was there an appropriate amount of on-screen information?
	Button interaction	Did you have any difficulty finding which button to press on each page?
	Speed	Was the game played at a proper speed to understand the content?
	Agility	Was it difficult when you needed a quick reaction? (eg, selecting moving targets, avoiding obstacles quickly)
Psychological and socioemotional elements
	Objective	Was the goal to achieve in the game clear and appropriate?
	Resource/item	Was the method of using in-game resources and items clear and appropriate?
	Word comprehension	Did you understand the meaning of the words and sentences in the game?
	Mood/character/story	Did you like the atmosphere, character, and story of the game?
Consumption contextual elements
	Setting to start	How was the setting process to start the game? (eg, loading the account, setting a nickname)
	Advertising	Were the in-game ads easy to deal with?
	Payment	Did you understand the in-game purchase system?