This also exists as a deck of cards and there's online and mobile versions of it as well: https://deck.artofgamedesign.com/#/ https://deck.artofgamedesign.com/#

This also exists as a deck of cards and there's online and mobile versions of it as well: https://deck.artofgamedesign.com/#/ https://deck.artofgamedesign.com/#/ These are a bit more practical for actually using the lenses whilst designing.