Many TG CD-Games had their code in track one, and the other tracks were just redbook audio. So you pop the CD into a regular player, skip the first one or two tracks so your speakers don't blow out with static, and then enjoy the game soundtrack.
“This CD is made for the Turbografx game system. Please place it into the CD drive on your Turbografx to play.”
My brother and I thought this was really cool when we were kids. We thought the CD player must “know” that it’s a game.