From the Back Cover:
"The Gamer's Handbook of the Marvel Universe is the complete last word on heroes, villains, and other characters of the Marvel Universe that players of the Marvel Super Heroes role-playing game have been looking for! Supplemented by data from the popular Official Handbook of the Marvel Universe, the Gamer's Handbook of the Marvel Universe has complete Marvel Super Heroes game statistics for hundreds of Marvel characters - the good, the bad and the in-between!
The pages of the Gamer's Handbook of the Marvel Universe are designed to be removed from the book for easy play. The pages are five hole punched so they can be organized in a binder. And each page includes complete background information, important facts, and complete stats - everything you need!
And the Gamer's Handbook of the Marvel Universe covers updates on familiar characters who have changed (such as the Moon Knight and the Hobgoblin) and new characters who appeared in 1990 (such as Roughhouse and Bloodscream). Look for the first four volumes and the 1989 Update in your local stores, and watch for further updates in the years ahead!"