Finally, people have started making business card-trading card games. Life resembles Pokemon - folks at conferences trading cards. Why not put attributes and points on business cards for people to use for games? These particular OK/Cancel cards celebrate contemporary usability wonks - interaction design experts. The designers, pictured below, took an open-ended approach to the gameplay - each of the cards has four attributes, different for each usability designer. But not specified within any ruleset! So people can make up their own game to go along with the scenario.

Kevin and Tom, from OK-Cancel, with the cards they designed.