A promotion for inducing players to play wager games takes the form of bonus play. The bonus play, in one form, takes the form of "free" turns of play in which a player credit account is not debited by such turns of play. Winnings from bonus play can take the form of cashable credit, bonus credit, or additional bonus play, as dictated by the pay table of the wager game. In other embodiments, the operator exercises control over the utilization and features of the bonus play, such as by fixing the wagering for the bonus play in advance and limiting the availability of the bonus play to a particular time period. Bonus play is played in a bonus mode of operation and the player may switch between bonus mode and a regular mode. A pay table featuring bonus play as one of the awards for a winning result of a wager game is also described. A pay table featuring an award of bonus credit is also described. Bonus credit is credit which is not subject to immediate withdrawal by the player. Bonus credit can be withdrawn, if at all, provided conditions set by the operator of the game are met.