Call of Duty will continue to be released on Steam and Xbox simultaneously. Microsoft promised to release Call of Duty on Nintendo Switch within 10 years. According to Valve CEO Gabe Newell, the deal was never signed the owner of the largest PC game store believes Microsoft on its word.
In a comment for Kotaku, Newell said that Microsoft wanted to enshrine its promise in the document, but Valve decided to do without it:.
The latest installment in the series, Modern Warfare II, was released to Valve. After the release of WWII (2017), Call of Duty spent almost five years on Steam.