Marvel Super Heroes Secret Wars is a twelve-issue comic book limited series published from May 1984 to April 1985 by Marvel Comics.

Secret Wars II is a nine-issue comic book limited series and crossover published from 1985 to 1986 by Marvel Comics. The series was written by Marvel’s then Editor-in-chief Jim Shooter and primarily pencilled by Al Milgrom.
The series was a sequel to original series Secret Wars, published in 1984 and 1985. The series tied-in with issues of other Marvel titles, with each “tie-in” featuring a “Secret Wars II” logo in the top right hand corner to indicate that it was a part of the overall story

Secret Wars 1
A godlike cosmic entity called the Beyonder has been observing the Earth-616 universe (the mainstream Marvel universe). Fascinated by the presence of superheroes on Earth and their potential, this entity chooses a group of both superheroes and supervillains and teleports them (against their will) to “Battleworld”, a planet created by the Beyonder in a distant galaxy, and stocked with alien weapons and technology. The Beyonder then issued the following decree: “I am from beyond! Slay your enemies and all that you desire shall be yours! Nothing you dream of is impossible for me to accomplish!”
The heroes (the X-Men choose to remain a separate unit) and villains have several skirmishes. There are several significant developments both within the miniseries and the regular titles: Magneto is placed among the heroes, rather than the villains, due to his motives – desire to protect and promote mutant rights – being more heroic than villain-like; villainesses Titania and Volcana are created; the second Spider-Woman, Julia Carpenter, is introduced; Spider-Man finds and wears a black costume for the first time, initially unaware of the fact that the costume is actually an alien symbiote; Doctor Doom temporarily steals a portion of the Beyonder’s power; having fallen in love with the alien healer Zsaji (who sacrificed her life on Battleworld to save the heroes), mutant Colossus ends his romantic relationship with a heartbroken Kitty Pryde; the Thing remains behind on Battleworld and explores the galaxy for a year with heroine She-Hulk temporarily joining the Fantastic Four as his replacement. During the Fantastic Four’s absence from Earth, the Thing’s longtime girlfriend Alicia Masters is secretly kidnapped by the alien Skrulls. She is replaced by Lyja, a Skrull espionage agent who later marries the Human Torch while impersonating Masters
Secret Wars 2
The entity that instigated the first Secret Wars, the Beyonder, visits Earth in search of enlightenment and inevitably comes into conflict with Earth’s metahumans and the cosmic entities that exist in the Marvel Universe. The Beyonder is eventually dealt with, although the heroes also have to prevent the destruction of the planet as a consequence of his actions.
A sequel in the form of a single issue revealed that the Beyonder was an evolved cosmic cube and evolved into a being called Kosmos.
Secret Wars 1 – Download

Secret Wars 2 – Download