at least one other player achieving a second specific outcome in the primary game or meets other preselected criteria.
In another embodiment, a gaming system is disclosed. The system includes a plurality of gaming machines, each configured for playing a primary game of chance. At least one bonus game display device is operably coupled to the bank of gaming machines and is configured to display a bonus game. The bonus game is configured to enable a first player to wager against at least one other player based on the first player achieving a first specific outcome in the primary game or meeting other preselected criteria and the at least one other player achieving a second specific outcome in the primary game or meeting other preselected criteria. A central serverto visually easily understand the relationship between the head position and the magnetic disk rotating direction, as shown in FIG. 2, an area where the write head traces is called as a recording track, and an area where the read traces is called as a reproducing track. In contrast, an area on the magnetic disk for the recording/reproducing is originally performed is called a data track or simply as a track. In a case that the magnetic disk drive is structured in which the recording track and the reproducing track are conformed to each other when the positioning is performed at the central track (in a case that the width of the recording track and that of the reproducing track are different, the centers of both recording and