This authentic Air Buster Jamma board has been tested and both 1 and 2 player modes/controls play as they should. The only issue I found while testing is that the Game Over screen flash causes incorrect palette colors to appear (see photo and video below) for the duration of the Game Over screen and then everything is back to normal. I do not know if this is caused by the board or my cabinet. The advertise/demo mode shows the first four stages appearing and functioning like normal. The item “Air Buster Arcade Game PCB Authentic Jamma Circuit Board Kaneko Shooter Shmup” is in sale since Tuesday, September 7, 2021. This item is in the category “Collectibles\Arcade, Jukeboxes & Pinball\Arcade Gaming\Replacement Parts”. The seller is “superpcenginegrafx” and is located in Aldergrove, BC. This item can be shipped to Canada, United States.