That happened on Ethereum with a game called exit.scam where the last person who buys a token wins, but every time someone buys one the timer resets. In order t

That happened on Ethereum with a game called exit.scam where the last person who buys a token wins, but every time someone buys one the timer resets. In order to win the game a bunch of miners colluded to make it impossible to get a transaction through, guaranteeing they bought the last one.