How to play:

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In Steel Gunner, players must take controls for Garcia and Cliff, who are cops in the Neo Arc police force; their mission is to stop a radical terrorist group, STURM (it is never explained what the letters stand for), as they have captured the well-known authority on physics, Dr. Ryan, and his assistant, Dr. Ellis, in order to create an abominable war machine. Like how Phelios created the illusion of allowing scores not ending in "0", this game creates the illusions of not having any scoring counters (like The Return of Ishtar and Yokai Dochuki) - but it has the text of "1UP", "HI-SCORE" and "2UP" on its title screen, which indicates that it does. The players can shoot absolutely anything on the screen, including all background objects and even innocent bystanders; however, if they should do the latter, it will cause them to lose energy. Both players are armed with two weapons - a machine gun with unlimited ammunition and a limited number of missiles (four at the start of the game, with another four being awarded at the end of each act). When launched, the missiles will damage or destroy everything on screen (including innocent bystanders); but if an innocent bystander crosses the screen unharmed, the players will regain a small amount of energy. The players will also regain energy at the end of each act, depending on how accurate their shooting was - and unlike in most other shooters, shooting at background objects does not count towards accuracy or add to the players' scores. Upon reaching the final battle with STURM's leader (named Gatse Bernard), players must try to destroy him without running out of energy, as the game will not let them continue if they run out at that point.