Complex sentence: Due to the popularity of more traditional styles of shoot-em-up, a shooting only mode was included in the saturn port, in this mode all the other races are removed and the player is left to play the game at their own pace.
Split into simpler sentences: Due to the popularity of more traditional styles of shoot-em-up, a shooting-only mode was included in the Saturn port. In this mode, the racing aspect is removed and the player is left to play the game at their own pace.