Rio Grande Games: Concordia Solitaria Expansion - Strategy Board Game Expansion To Concordia - Ages 14+, 1-2 Players, 60 Min Game Play, (Rgg615)CONCORDIA SOLITARIA is a solo and 2 player expansion for Concordia. In CONCORDIA SOLITARIA, you compete alone or in a team of two against the tricky opponent CONTRARIUS. As the cards you play also determine the reactions of your adversary, only skillful planning leads to victory. In a two player game, you may compete against CONTRARIUS as a cooperative team or challenge it individually. CONCORDIA SOLITARIA may be played on any of the maps and with any