Software maker Microsoft is buying the video game company Activision Blizzard for nearly $69 billion in one of the biggest technology deals in history.Microsoft announced the agreement Tuesday and said it is expected to be completed in 2023.The deal must be approved by government regulators.Activision Blizzard produces a series of popular and profitable video games including Call of Duty, World of Warcraft and Candy Crush.Microsoft is the maker of the Xbox gaming system and is expected to add those games, along with others, to its subscription service.If approved, the deal will turn the software maker into one of the world's largest video game companies.It is expected to better position Microsoft to take on other major videogame competitors like China's Tencent and Japan's Sony.The deal is also expected to help Microsoft better compete with technology companies developing equipment and systems for a future "metaverse."