When the game was released, one of their issues featured the game on its cover and a 12-page strategy guide. Nintendo Power provided substantial coverage of Metal Storm. It was released in North America in February 1991, and in Japan on April 24, 1992. After the final boss is destroyed, the leaders of Earth grant the M-308 Gunner immortality, with the duty to protect mankind from future threats. In a last ditch effort, the player must storm the Pluto base with the most sophisticated weaponry available, the M-308 Gunner, and enable the self-destruct device. Attempts to activate the station's self-destruct system have failed. Most recently, the people of Earth watched helplessly as Neptune was destroyed. It has turned against the human race, and begun destroying the Solar System. On a defense outpost on Pluto, a robot-controlled laser gun built to protect Earth from alien invaders has begun to malfunction.
In the year 2501, mankind has colonized the Solar System, but all is not well.
#METAL STORM NES POSTER PASSWORD#
When a stage is finished, a password is provided which saves the score, special weapons, and number of lives left. The player can pick up various power-ups including a power booster for the gun, a shield, and a fireball ability for when flipping gravity. The player is also equipped with a gun to destroy enemies. Other games feature a "reverse gravity" gameplay, such as Mega Man 5, and Strider, but Metal Storm is one of the few games to be built entirely around this concept. By hitting "Up" and "jump" buttons at the same time, the player can flip from the floor to the ceiling and vice versa. The player takes on the role of the M-308 Gunner, an all-purpose combat robot with a specially equipped gravity control device. Metal Storm is an action-platform game featuring six stages with two acts each, and a final boss rush stage. The M-308 seen using reversed gravity in stage 6–2.