Activision Blizzard has agreed to buy Irish-based King Digital Entertainment for $5.9bn (€5.35bn), unifying console and PC games ‘Call of Duty’ and ‘World of Warcraft’ with the leading mobile game ‘Candy Crush Saga’.

Irish firm King Digital Entertainment, the maker of hit mobile phone game Candy Crush Saga, expects to be worth up to $7.6bn (€5.4bn) when it goes public this month as it looks to take advantage of strong demand for technology investments.