In the line world, everyone is made the same. Everyone is the same speed, everyone can shot the amount of ammo and everyone is the same except colour. In the line world, only one thing differs the lines from each other...Safe. Safe is a court that sorts the small lines from the big lines. It is simple, 2 lines enter, 1 line leaves, then eventually, the other line leaves after being defeated. This is a two player game, who can you beat and prove that you are better?