We are working to update this site with more information about the Konami Card Game Network!
Beginning March 23, 2017 the new Konami Card Game Network (KCGN) replaced COSSY.
KCGN allows you to assign a home store and get ranked within tournaments run at your home store. KCGN is also be compatible with Chrome and Smartphones.
We will post more information on this page soon, please check back soon!