From the back of the book:
Will the real MARVEL SUPER HEROES please stand up?
Add a new dimension to your MARVEL SUPER HEROES GAME - the third dimension! These MARVEL SUPER HEROES ADVENTURE FOLD-UP Figures are three-dimensional figures of your favorite heroes and villains. This package includes over 125 figures: the Mighty Avengers, Fantastic Four, Uncanny X-Men, A.I.M., Doctor Doom, Galactus, and bunches more. You've been waiting for this one, Marvelites - Don't miss it!
This package includes four sheets of full-color, fold-up figures and simple, illustrated instructions. Assembly required.