The Games and Amusements Board initially started its operation in 1951 with the issuance of Executive Order No. 392. Through this particular law, the powers, duties and functions previously exercised, and performed by:
the city and municipal mayors over fronton and basque pelota games
the Boxing and Wrestling Commission over boxing and wrestling
the Commission on Races over horse racing, were consolidated and transferred to the Board
On March 20, 1974, upon the signing into law of Presidential Decree No. 420 creating the Philippine Racing Commission, the authority over horse racing was divided between the Board and the Philracom. GAB retained the function of supervision and regulation of the betting aspect of horse racing, while all other functions related to horse racing were transferred to Philracom. On January 6, 1976, the scope of GAB's regulatory function over professional sports widened as the agency was tasked to likewise supervise and regulate the professional basketball and other professional games in the country. The Board's regulatory function was also made more specific against anti-illegal gambling operations with the establishment of Anti-Illegal Gambling Unit on January 17, 1992 – which became one of GAB's units. AIGU initially was composed of personnel appointed by the Chairman of GAB and detailed staff from the Philippine National Police, the National Bureau of Investigation, the Philippine Racing Commission, the Philippine Charity Sweepstakes Office, other offices involved in gambling operations, as well as other law enforcement agencies in the country. On December 28, 1993, the board assumed part of the overall functions of the Gamefowl Commission, particularly insofar as international cockfight derbies are concerned.
Leadership
GAB, as an organization, is headed by a chairman and two commissioners
Scope
Sports and activities
Among professional sports and activities that the GAB regulates are: ;Sports
GAB considers leagues where participating athletes "play for pay" should be under its supervisions under its mandate. In November 2018, the GAB has announced plans to put leagues which meets this criteria under its supervision such as the Maharlika Pilipinas Basketball League, and the volleyball leagues Philippine Super Liga and Premier Volleyball League despite some of the leagues' players still simultaneously playing in collegiate leagues.