The Bartle Test uses the four suits in order to distinguish different player personalities that arise typically in a video game:

• Clubs (Killers) (♣) enjoy competition and take pleasure in causing physical destruction in the virtual environment.
• Diamonds (Achievers) (♦) enjoy gaining "points", levels, or any physical measure of their in-game achievement.
• Hearts (Socializers) (♥) enjoy playing games for the social aspect or by interacting with other players.
• Spades (Explorers) (♠) enjoy digging around, discovering new areas, or learning about easter eggs or glitches in the game.