An interactive bonus game played in conjunction with a base game. To initiate
play, a player selects a character from a list of characters in a gaming device.
The player then makes a wager and plays the base game. Entry into the bonus game
is achieved upon a qualification event in the base game. In the bonus game, the
players have the option of modifying attributes for the selected characters. The
bonus game provides the qualified player with the option to challenge another player
or a computer-generated opponent in a player to player contest. A player may also
be challenged by a computer-generated opponent. The challenged player then chooses
whether to surrender to the qualified player or to accept the challenge. Upon acceptance
of the challenge, the contest is conducted between the two players and a winner
is determined, which may at least in part be affected by the attributes of the
characters as modified by the players.