Gambling Portal Webmasters Association.travail de nuit casino GYPSUM MILLS VICTOR CASINO What is the abbreviation for Illinois Casino and Gaming Association? All Acronyms. "ICGA - Illinois Casino and Gaming Association ". 3 November Web. In , the Illinois General Assembly passed the Riverboat Gambling act allowing for the operation of 10 riverboat casinos. The Illinois Casino Gaming Association (ICGA) represents 5 of the 10 casinos currently operating in Illinois. Casino Management Association Status unknown. State Associations. Illinois Casino and Gaming Association (ICGA) alyanskrym.ru A not-for-profit organization representing eight of nine riverboat gaming operations in Illinois.