Mus Las40 is a web-based application that allows http://mus.las40.es play mus couples against other online users. The games are played 2 games and each game after an update of individual ranking based on the result. Look for a regular playing partner to play the championships and moving up the rankings in pairs. Join free Mus championships held periodically and scale positions in multiplayer classifications. Enjoy this popular card game in the form of pairs.