Players should be able to learn the game quickly.

Players should feel continuously entertained, since the play will not always be a win.

Players should feel that the game is authentic and realistically reflects the odds of winning.

Players should feel a sense of anticipation of the possibility of winning a prize.

Players should feel that they had a real chance of winning, or came very close to winning.

Players should feel that they had a “sense of control” over their outcome.

Players should be given the chance to celebrate and then savor a win.

Players should feel that they got their money's worth, and got the full amount of play value.