Translated from the back of the book:
"Are you fed up with rules monstrosities whose size outdo the phone book of Paris? Do you deem humor higher than rules even for nose picking? Then TWERPS is the answer! TWERPS is unparalleled fun! A long time insider hit from the US, TWERPS is now finally available in a german edition:
In this book you will not only find the basic rules, not only the magic rules, not only a compendium of spells, but also three complete sourcebooks with an entire world, Kung-Fu and SF rules, more than 40 NPCs and monsters and, and, and..."
Additional user info:
this German publication combines these publications
TWERPS Basic Rules (1st Edition)
TWERPS Campaign Book #01: Kung Fu Dragons!
TWERPS Campaign Book #02: Fly-By Knights