This variant became the standard form of play in Brazil, since the only edition of Diplomacy available there was this unauthorized bootleg version by GROW Produtos Para Recreacao, Ltda., with its minor differences in the map lines (Clyde, Edinburgh, the North Atlantic and the Norwegian Sea meet at a point, and an additional line crosses the lower Baltic from Berlin to Denmark), the addition of the North Africa supply center, and the modification of the Roman unit. These differences are considered to be mistakes or perhaps intentional minor variations made in an attempt to forestall copyright infringement action.