To use the rules and procedures meant to protect a system in order to instead manipulate the system for a desired outcome.

Any of several confidence tricks in which something worthless is substituted for something of value, often in a sealed envelope.

Any of various children's games where participants form a ring or circle, often with hands joined.

plural of ring game

(poker) A game where the chips directly represent money and players are free to leave at any time, in contrast to a poker tournament.

plural of cash game

(informal) An attempt to psychologically manipulate or intimidate someone. / A mental pursuit or obsession. / Skill at fellatio.

Alternative form of head-game

plural of adventure game

(video games) A computer or video game of the genre characterized by investigation, exploration, puzzle-solving, interaction with game characters, and a focus on narrative rather than reflex-based challenges.