A person who is playing the game Candy Crush Saga on his/her smartphone is fulfilling the 'Me Time' motivation for mobile app usage, out of the seven.
Other Primary Motivations for mobile app usage are Socializing, Shopping, Accomplishing, Preparation, Discovery and Self Expression.
While playing a game on a personal smartphone, a person is actually doing what he wants to do. He enjoys spending his time with his own will. So actually he is having a Me Time while playing a game.