Call of Duty Black Ops 6 has been labeled as the 'biggest Call of Duty release ever' by Microsoft CEO Satya Nadella.The game had a massive start with record-breaking day one players and Game Pass subscriber adds.It is the first Call of Duty entry to launch for Xbox Game Pass on day one.In the UK, the game debuted at number one in physical sales but experienced lower Xbox sales due to the impact of Game Pass.