Kikō Keisatsu Metaru Jakku (aka Armored Police Metal Jack) is a side scrolling action game by Atlus and based on a Japanese anime series of the same name aired in the 1990s. In the year 2015, a special criminal investigation team of the Metropolitan Police is on alert for any kind of emergency situation. One day, a mysterious organization and crime syndicate called "Ido" appears and sends out robots to rampage Tokyo city. This is when the Metal Jacks enter the scene - a team of three men and their mechanical-cyborg suits embark on a mission to save the city and counter the emerging terrorist threat. The player takes control of one of the three Metal Jacks - Ken Kanzaki (Red Jack), Ryō Aguri (Silver Jack) or Gō Gōda (Blue Jack). Each fighter has slightly different attacks and weapons - Red Jack is average and can use a laser gun, Silver Jack can do high-jumps and use a laser-sword and Blue Jack is the toughest of all but can't use weapons. Although two Metal Jacks come equipped with a weapon, they start up empty handed and ammunition must be collected periodically. Each level is made up of two phases. During the first stage, the Metal Jacks fight in their police suits and levels follow a traditional platform gameplay style with enemies to battle, power-ups to collect and mini-bosses to defeat. Only three power items are available throughout the game - weapons/ammunitions (either gun or sword, based on the Metal Jack in action), shield energy or extra life. The second stage is the 'boss phase' - Metal Jacks combine with their support vehicles and transform into large robots, ready to engage the final boss. In this form, players can charge up a large and powerful attack that inflict extreme damage to all foes on screen.