Buy a Black Brain Rook membership level for another user."
My brother has none. I bought my black rook at the two-for-one special. Since I was the one paying for it, both achievments got credited to my account. My brother is a black rook too but he didn't pay for it, so he doesn't have those achievments...
(gem) Når du rykker i et spil, kan du vælge hvilket spil du går videre til ved at vælge i listen ved siden af træk knappen. (pauloaguia) (vis alle tips)