From the back cover:
"The Action! System Core Rules provide all the basic rules necessary to create and play a role-playing game.
Create adventures and characters based on your favorite movies, TV shows or novels.
The Action! System is ready to play as-is, but with the addition of rules Extensions and Variants it is versatile enough to satisfy even the most demanding gamer!
With Action! System you have all the tools necessary for hours of interactive storytelling entertainment.
Easy to learn and fun to play. Recommended for ages 12 and up.