Crown Prince Mohammed bin Salman visits Japan next week, where he will hold talks on energy while hunting more opportunities in gaming as he seeks to improve Saudi Arabia's image.

The reputed "Call of Duty" fan has launched a multibillion-dollar push into the gaming sector — from tiny eSports to game development — as part of his Vision 2030 transformation strategy for the oil-rich kingdom.

Saudi Arabia's sovereign wealth fund holds around 8% stake in Nintendo, and the country is planning a theme park based on Japan's "Dragon Ball" manga franchise in a new "entertainment city" outside Riyadh.