Why 'Overwatch' is Blizzard's riskiest game yet

    Blizzard is known primarily as a developer of strategy games and MMORPGs. Recent years have seen it expand those boundaries though, with MOBA Heroes of the Storm and trading card game Hearthstone. Those are spin-offs or remixes of existing titles though -- next spring, the studio launches Overwatch, its first completely new franchise in nearly two decades.
The game sees Blizzard stepping into new territory, conceptually and literally -- a mul