Featuring a diverse range of opportunities for set-up and prep missions that shape your plan of attack, multiple paths of approach, constantly changing security measures and a dizzying array of choices once inside. ' The Diamond Casino Heist is an all-new approach to Heist architecture and execution: one huge gameplay-packed operation as you work with the Cheng family to infiltrate the most secure building in all of Los Santos. Here's how Rockstar sold it to their fans: Rockstar added the Diamond Casino Heist as part of a large content update to the game on December 12th, 2019.īut whilst this new heist doesn't have a three-part structure like the games Doomsday Heist content, it does have a multitude of ways to complete it and potential outcomes. Grand Theft Auto Online's newest Heist is also one of the games most profitable.