Worth checking out Rifts then.
http://rpg.drivethrustuff.com/product/60679/Rifts-RPG---1st-Edition-Rules
This book uses the First Edition Rules
Nearly 30 character classes: Cyborgs, Juicers, Dragons, Crazies, Cyber-knights, Psi-stalkers, Line Walkers, and much more!
Super-science and high technology: Bionics, cybernetics, power armor, and mega-damage weapons.
A transformed Earth where magic is a reality and supernatural creatures from the rifts stalk human prey.
Compatible with Heroes Unlimited, TMNT & Other Strangeness, Beyond the Supernatural, Mechanoids, and Palladium's other role-playing games.
Except where shadowrun has a lot of story and information pre-written, Rifts leaves still leaves a lot to the imagination. The rules will be interesting to learn
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
I'd definately recommend it, much to sink your teeth into.