Event

Secret Wars I
What Happened
In an adjacent dimension, a cosmic entity known as the Beyonder observed Earth-616.  Fascinated by humanity and the presence of superhumans on Earth, the Beyonder transported a group of heroes and villains to a planet he created in a distant galaxy stocked with weapons and technology from several alien cultures; with the promise of ultimate power to the victors of the Secret Wars.
Notable Deaths, Destruction or Introduction

Introduction

Beyonder

Spider-Woman II

Titania II

Venom Symbiote

Volcana

Creators
Jim Shooter, Mike Zeck & Bob Layton
Pertinent Issues in Order
Marvel Super-Heroes Secret Wars #1-12 ( May, 1984 - April, 1985)

Tie-Ins:

Avengers Vol. 1 #242-243 (March - April, 1984)

Captain America Vol. 1 #292 (April, 1984)

Fantastic Four Vol. 1 #264-265 (March - April, 1984)

Incredible Hulk Vol. 1 #294-295 (April - May, 1984)

Invincible Iron Man Vol. 1 #181-15px2 (April - May, 1984)

Marvel Team-Up Vol. 1 #140-141 (May, 1984)

Mighty Thor #383 (Sept. 1987)

The Thing #10 (April, 1984)

Uncanny X-Men #178-15px1 (Feb. - May, 1984)