There are hundreds of ways to awaken the urge to play games in both children and adults. Remind your target group of the games they played when they were kids, set them riddles and puzzles, or challenge them to a contest. All games have one thing in common: they only work when the player takes an active part and is prepared to devote some attention to it. So don't make your game too complicated or too simple, but let people experience a sense of triumph that will produce an 'Aha!' or a 'Yes! These examples are just a small selection of the ways in which you can grab the target group's attention by getting them involved in a game.