with the arcade original being launched with linked game machines that featured contrasting coloured light gun controllers. In addition, the original game mechanics of its predecessor were modified for the sequel, including the time-limit system, while incorporating new elements such as each playable character having their own battle situations at times, players receiving a score penalty for shooting the other character, and a new game highlight system for indicating a deadly shot about to hit the player. A port of the game for the PlayStation 2 was released in 2001, supported by the GunCon 2 light gun peripheral, which included enhanced graphics and additional story scenes. Time Crisis 3 (2002) Time Crisis 3, released for the arcades in 2002, focuses on the efforts of agents Alan Dunaway and Wesley Lambert being sent to help thwart the efforts of a hostile nation, who recently took control of a neighbouring country's island, as part of a plan to strike at several countries in its vicinity with tactical missiles. As part of their mission, the pair work alongside Alicia Winston, a local resistance fighter, who seeks to rescue her brother and her men, after they are captured following a failed attempt to destroy the missiles themselves. The game expanded on the series' gameplay mechanics by allowing players to use three additional weapons in each level, alongside the traditional handgun of the playable characters, though unlike the main weapon, each has limited ammo that can only be replenished by defeating a special type of enemy during combat sections. In addition, a health bar element was included for bosses and certain enemies that must be depleted in order to defeat them, and destructible objects that can take out enemies close to them when they explode. The ported version for the PlayStation 2, released in the same year, featured additional content including a side mission mode, which is focused on Alicia's perspective of events in the story. While it featured similar gameplay, it also included the addition of stages in which players take out enemies using a sniper rifle. Time Crisis 4 (2006) In 2006, Time Crisis 4 was released and introduced a refined multi-hiding system (similar to the one featured in Time Crisis: Project Titan) where the player can move the gun in a certain direction to move the character's position in certain areas of the game regardless whether or not the player may hiding