The Art of Game Design: a Deck of Lenses is a companion to the book of the same name, offering a convenient deck of 113 unique "lens cards" to enhance your game design creativity. Developed by Schell Games LLC, this iPhone app is a valuable toolkit for designers of all levels.

Each card in the deck features key questions that will help improve your game design, covering various aspects such as story, game mechanics, technology, aesthetics, psychology, creativity, teamwork, playtesting, and even business issues. The cards also include magnificent color illustrations, making it easier to remember each principle.

Whether you're a novice or an expert game designer, The Art of Game Design: a Deck of Lenses will revolutionize the way you approach game design. With its comprehensive range of lenses, this app is a must-have for anyone looking to create world-class games.