The english edition exists in a number of prints, the box and the rules may differ somewhat between prints.

The rules came in a version 1.1 November 20, 2006

At least one version has on the backside a reward:
"origins award for Best Traditional Card game of 2001"
It has a text stating "sold hundreds of thousands.. translated into French, German, Italian, Spanish and Dutch.
It has ISBN 1-55634-473-2
Bar Code: 9781556344732 and 52495
Internal code: SJGO2495 1408