GURPS - Wild Cards

From their website:

"GURPS Wild Cards is a complete, detailed guide to the Wild Cards series. Now you can enter that world, with "ace" powers of your own. Written by one of the original Wild Cards creators, this book includes:

• Detailed background, history and timeline of the Wild Cards world.
• Rules for turning yourself into an ace.
• Complete biographies and descriptions of over 60 important Wild Cards characters – heroes, villains, aces and jokers – with brand new background detail.
• And a description of how the Wild Cards books grew out of a game . . . by a writer who was there at the very beginning!

This is a roleplaying sourcebook to be used with the GURPS Basic Set, Third Edition and with GURPS Supers. Warning: Like the original Wild Cards books, this volume contains adult material and situations."