Huge Materia The Huge Materia in " Final Fantasy VII " are extraordinarily powerful Materia , produced in the core of a Mako Reactor . They are high density Materia that have 330 times the power of a regular Materia . The Huge Materia resemble the traditional Crystals of the " Final Fantasy " series . When Shinra Electric Power Company set out to gather the four Huge Materia and fire them on the Shinra No . 26 rocket into the Meteor to destroy it , Cloud Strife and the party want to snatch up the Huge Materia before Shinra does although the game continues even if the party is unsuccessful . Acquiring Huge Materia . The first Huge Materia is found in North Corel and must be taken from a runaway coal train . If they succeed , Barret is hailed a hero , and the player will be given the Ultima Materia . If the player catches up with the train but does not stop it they will not get the Huge Materia and will have to pay for the Ultima Materia . If the player fails to catch up to the train they get neither the Huge Materia or any chance of getting Ultima . The second Huge Materia is won after the battle minigame in Fort Condor . The player does not need to win the minigame , but simply face the boss . If they lose to the boss Fort Condor is defeated and the Huge Materia is lost . The third is found on the Bottom of the Sea near Junon and on the sunken red submarine . If the player fails to destroy the submarine in the torpedo minigame , the Huge Materia is lost . The final one must be saved from the Shinra No . 26 rocket while in space by inputting a code . If the party fails to guess the code in time , the Huge Materia will be lost . The code is : After the party escapes the rocket in an escape pod it will plow into Meteor , but fail to destroy it . Even if the player does not save the Huge Materia , Shinra ' s plan will still fail . The color of the Huge Materia is determined by where it was obtained . The red Huge Materia is obtained if the player successfully destroys the red Shinra submarine and retrieves the Huge Materia from it . The green Huge Materia is obtained from Shinra No . 26 . Although it is possible to miss some or even all four Huge Materia , in which case the player cannot access Bugenhagen ' s observatory , the blue Huge Materia is the only one that will not affect gameplay at all since Bahamut ZERO can be obtained from Bone Village if it is missed . Missing one of the other three will prevent the player from synthesizing Master Materia of that Materia ' s respective color . Master Materia . Bugenhagen will let the party store the procured Huge Materia in the observatory in Cosmo Canyon . If Cloud has both the Bahamut and Neo Bahamut Summon Materia , they will receive the Bahamut ZERO Materia through the blue Huge Materia . Through the other three , Cloud can gain use of the three Master Materia , but each comes at a price . By mastering all of the possible Materia orbs in a specific group — e . g . , all green Magic Materia orbs — Cloud can obtain the Master Magic Materia , but will have to sacrifice all the " MASTERED " ( fully grown or full stars ) normal Materia . Since all mastered Materia immediately spawn an identical Materia at the basic level ( one star ) , it is possible to have all mastered Materia , as well as the Master Materia . Master Materia does not gain Ability Points . The three Master Materia are Master Magic ( green ) , Master Command ( yellow ) , and Master Summon ( red ) . Because the Master Command Materia does not possess all the available commands , the player doesn ' t have to master all Command Materia to get it . Master Materia can be created for an infinite amount of times . If the player failed to score any Huge Materia the set of Master Materia can still be acquired from the Kalm traveler .