Blue Cross, White Ensign: The Imperial Russian Navy during the Age of Sail is the third volume in the Flying Colors series of games on naval combat., Like its predecessors, this volume is completely independent of -- but fully compatible with -- the other volumes in the series. Nothing else is need to play!, It focuses on the efforts of the Imperial Russian navy in its struggles against the navies of Sweden in the Baltic and Turkey in the Black and Mediterranean seas from 1770 to 1807., For 2 players, or 2 teams of players., The command system provides an excellent solitaire experience as well.