San Francisco (AFP) – PlayStation maker Sony announced a $3.6 billion agreement on Monday to buy US video game studio Bungie, creator of hits like “Halo” and “Destiny”, as a gaming industry battle heats up with Microsoft. Sony’s deal comes weeks after Microsoft unveiled a landmark $69 billion pact to acquire “Call of Duty” maker Activision Blizzard, which Microsoft says would make it the third-largest gaming company by revenue behind Tencent and Sony. Bungie is based not far from Microsoft headquarters in the US state of Washington, and its “Halo” franchise is considered to be among the video …