Airlines Europe: Flugverbot – a free expansion distributed at Spiel 2011 – provides players a blocking variant for Alan R. Moon's 2011 release Airlines Europe that, in the words of Abacusspiele's Matthias Wagner, "should make the board/routes slightly tighter". Airlines Europe: Flugverbot introduces a revised version of the sabotage rules present in Moon's 1990 release Airlines in which players can block locations on possible airline routes. ("Flugverbot" = "flight ban")