"You would have a revolt if you were to remove the game from one platform," said Kotick.
He said that removing "Call of Duty" from PlayStation, which is made by Sony Group (6758.T), would be "very detrimental" to Activision's business.
The Federal Trade Commission has asked a judge to stop the Microsoft acquisition temporarily in order to allow the agency's in-house judge to decide the case.
Microsoft CEO Satya Nadella is scheduled to testify on Wednesday afternoon before Judge Jacqueline Scott Corley in federal court.
The agency says the transaction would give Microsoft, which makes the Xbox console, exclusive access to Activision games, leaving Nintendo (7974.T) and Sony Group out in the cold.
Persons:
Bobby Kotick, Kotick, Satya Nadella, Jacqueline Scott Corley, Biden, Diane Bartz, Greg Bensinger, Matthew Lewis
Organizations:
FRANCISCO, Activision, Microsoft, PlayStation, Sony Group, Federal Trade Commission, FTC, Nintendo, Britain's, Markets Authority, Thomson
Locations:
United States, Washington, San Francisco