"Super-Powered Roleplaying Meets the Real World"
From the back of the book:
"The Supers are here! From costumed crusaders fighting against the forces of evil to monstrous villains terrorizing the world, your creations are only limited by your imagination! GURPS Supers lets you create real heroes and villains, each fully defined in both power and personality – not just combat monsters."
Include some background for the original GURPS Supers IST campaign