vehicles that have been destroyed or lost can be redeemed for a cash fee. In the bar introductory and epilogue mission sequences, missions in Saints Row are divided between three linear story arcs which can be progressed through simultaneously or one by one, each with the objective of extinguishing a rival gang. Players engage in these missions at their leisure, but a prerequisite to instigate a mission is that they have filled up a bar on their Respect meter to allow them to unlock and play it. Respect is a currency earned by completing activities, which are mini-games that are scattered across the world and have increasing levels of difficulty. Missions and activities also accrue a player's cash income, which can be spent on goods and services such as weapons and clothes. Should players fail a mission, they may instantly reattempt it without incurring a loss of their Respect points. Cinemas scattered throughout the game world allow players to replay missions an unlimited number of times. Players use hand-to-hand combat, melee weapons, firearms, and explosives to fight rival gangs and the police. A free aiming reticule appears on the screen while players have weapons equipped. Weapons are accessed by a "weapon wheel" inventory system that appears on the screen as players hold down a button. Each of the eight slots on the wheel corresponds to different types of weapons, such as submachine guns and pistols. Players may only carry one of each type of weapon at a time. Saints Row makes use of regenerative health, but this process can be accelerated by eating fast food items. A "wanted level" system governs the response by opposing forces to players' aggressive actions. In the head-up display, surrounding the minimap, there are two bars; the topmost bar represents rival gangs and the bottommost bar represents the police. As players incite opposing forces, the corresponding bar fills up. Each bar filled is represented by the provoked enemy's logo, be it a star to represent the police or a "gang sign" to represent an enemy gang. One bar of notoriety will result in non-lethal retaliation. However, two, three, four or five bars of notoriety will result in a gradually increased lethal response. Notoriety depletes over time, but enemies will continue to be aggressive towards players until the meter recedes. Players may remove their notoriety instantly by utilizing drive-through confessional booths, visiting plastic surgeons, or inputting