A game is a series of transactions that is complementary (reciprocal), ulterior, and proceeds towards a predictable outcome. Games are often characterized by a switch in roles of players towards the end. Games are usually played by Parent, Adult and Child ego states, and games usually have a fixed number of players; however, an individual's role can shift, and people can play multiple roles.
Berne identified dozens of games, noting that, regardless of when, where or by whom they were played, each game tended towards very similar structures in how many players or roles were involved, the rules of the game, and the game's goals.
Each game has a payoff for those playing it, such as the aim of earning sympathy, satisfaction, vindication, or some other emotion that usually reinforces the life script. The antithesis of a game, that is, the way to break it, lies in discovering how to deprive the actors of their payoff. (source)