Complete information

The utility functions (including risk aversion), payoffs, strategies and "types" of players are thus common knowledge.

For instance, John Harsanyi was motivated by consideration of arms control negotiations, where the players may be uncertain both of the capabilities of their opponents and of their desires and beliefs.

In games with static, complete information, the approach to solve is to use Nash equilibrium to find viable strategies.

In dynamic games with complete information, backward induction is the solution concept, which eliminates non-credible threats as potential strategies for players.

A classic example of a dynamic game with complete information is Stackelberg's (1934) sequential-move version of Cournot duopoly.

In a normal extensive form, each player knows exactly where they are at in the game and what moves have been previously made.