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Gain-ground games are team sports which are played with a small ball or a balloon. They are often outdoors on a "ballodrome" but can also be played indoors.
Among these games, longue paume and real tennis are the most well-known because they are played with rackets. The rules change a little depending on the game, but the basic rules remain identical from one game to the other.[further explanation needed]
Games of gain-ground are characterized in particular by the use of "chasses". Chasses indicate the limit between both teams or in real tennis a limit to score a point. Points are counted as in tennis: 15, 30, 40 and set.
(in French) Benoît Goffin, LA BALLE PELOTE au cœur de notre région, éd. Aparté, Namur, 2006. ISBN978-2-9303-2715-0.
(in French) Marcel Lazure, Les jeux de balle et ballon picards: ballon au poing, balle à la main, balle au tamis, longue paume, Centre régional de documentation pédagogique de Picardie, Amiens, France, 1996.
(in French) Marcel Lazure, Les jeux de balle et ballon picards, Sports de France, Amiens, p. 96. , (1981)
(in French) Luc Collard, Longue paume et ballon au poing, revue EPS, n° 274, p. 72-75, nov-déc 1998
(in French) H. Civilio, Le jeu de balle en Belgique, Louvain, ( Mémoire en Education physique, Université Catholique de Louvain ), (1966)