In 1998, after "Metal Slug 1", a new series of works was ushered in - "Metal Slug 2", which was also the first alloy series created by SNK after acquiring Nazca. And SNK did not disappoint the players, taking the IP of the alloy slug to the extreme, surpassing the first part in terms of playability and storytelling.

In addition to the original gameplay, Alloy 2 also adds a state transition system for players, such as being hit by purple mist and turning into a mummy, which will reduce the character's movement speed and lose special weapons, and there is no way to use melee attacks. There is also a fat state of the character, when you pick up enough meat, it will make the character fat to increase the firepower of the character, and the special weapons and melee attacks you pick up will change appearance.
In addition to these Alloy 2, two female protagonists and two new supporting characters have been added, and the auxiliary characters will appear in the game to help the player fight. So did you know that there is a hidden bonus route inside Alloy 2? This place is in the second level of the game, we can jump to the right in a place full of bumps and see a god lamp, and if we wait here for a while, the lamp god will come out and add a lot of points to us.
After saying this, do you know what Alloy 2 is mainly about?
The story of Alloy 2 takes place two years after the Battle of Alloy 1, and in Alloy 1 we also said that Modern was finally put in prison, and Modern in prison has been trying to escape. Sure enough, two years after Modern was imprisoned, Modern disappeared for no reason without destroying any facilities, that is, escaped from prison.
To know that the place where the modern is locked up is impregnable, it is impossible to go out with a big swing, and there must be a secret hidden in it. In order to find out the situation, the top brass of the regular army entrusted the matter to the protagonists and sent two female members of the intelligence service, Fior and Mile, to assist in the investigation.
The protagonists first encounter an enemy army of Arab rebels who have joined the modern faction and rescue The One White Taro Uchiyo, the hostage we rescued in the game who can do Turtle Qigong.
The protagonists, with the help of Shirataro, successfully defeat the Arab rebels and its leader, Abu Abbas (the officer who raised the white flag in the lower right corner after the first level of the boss).
However, after the fight, the protagonists find that these rebels do not have the strength to rescue Modern from prison, let alone let Modern disappear for no reason. In order to investigate the situation clearly, the protagonists continue to go deeper. But the deeper they go, the more the protagonists feel that something is wrong, as they encounter a resurrected mummy and a giant robot. The protagonists feel that things are getting weirder.
The protagonists advance to an underground rebel base, where they encounter mutated humans and a submarine that transcends existing knowledge, with weapons more like alien technology.
After destroying the ship, the protagonists eventually arrive at Modern's secret base, where they meet Modern's adjutant general, O'Neill
After a bitter battle, the protagonists deliver O'Neill to the mouth of the killer whale. However, it is said that O'Neill is not dead, and the bones that emerge from the water are killer whales, which is really terrifying.
The protagonists move on, and then they encounter the alien creature , the Martian, at which point the mystery of Modern's successful escape from prison is solved, it turns out that Modern cooperated with martians, and the technological products, mummies, and mutants they encounter along the way are all related to Martians.
Although the protagonists know that Modern's partner is a Martian, it is still not clear what Modern and Martian will do next. Finally, the protagonists learned all the way that Modern, who was beaten up at the time, got the news that the alien spacecraft had fallen to the earth, so Modern found the aliens and wanted to ally with them. The aliens promised Modern because the spaceship was damaged, on the condition that Modern would help them repair the spaceship, and the aliens would also give Modern some alien technology.
After the protagonists find out the truth of the matter, they also meet Modern, and Modern begins to laugh after seeing the protagonists. But in the next second, what no one expected was that the Martians suddenly killed Modern's men and kidnapped Modern. According to the official plot here, after the Martians allied with Modern, they believed that humans were not worthy of being produced on Earth, so they wanted to exterminate humans and occupy the Earth themselves.
Next, there is a scene that shocks the players, that is, in order to save their boss, the rebels choose to cooperate with the protagonists to attack the Mars spaceship, but the Martian mothership has arrived, intending to deliver a fatal blow to the earth. At this moment of crisis, a rebel pilot pilot flew an airplane into the muzzle of the Martian mothership's charging gun, directly rendering the Martian mothership lose its attack power. (This section is a tribute to the movie Independence Day) The Martian mothership also had to retreat, and before leaving, it also threw down the stripped modern clothes. And this time, the protagonist and his party did not arrest Modern, perhaps thinking that Modern was squashed by the tied iron plate.
The story of Alloy 2 ends here, I have to say that SNK after taking over the alloy warhead, personally created the first work gave us a lot of surprises, in the story plot continues to continue the original outward extension, but also added the villain camp "Martian" is unexpected. SNK has also worked the IP of the alloy warhead.