The techniques used for keeping players in game and not leaving (logging off or closing the application) are often called:

What do you call the concept of visual equilibrium?

True or False? It is generally best to design a gamification experience with only one player type in mind.

Which pair of words differentiates between fonts with or without the small finishing strokes on the ends of a character?

True or false? 1em is equal to the current font size.

What is the recommended dots per inch (dpi) for images intended for display on the web or mobile devices?

What are the four types of Balance?

What is an "affordance"?

According to Alan Cooper, what is the "elastic user"?

Skinner operant conditioning relies on:

What is 'flow' as used in gamification principles?