For most players handling one high-ranked StarCraft match would be hard enough, but StarCraft II veteran CranK managed to do all this while constantly alt-tabbing to Hearthstone.
Both games require quick reactions. StarCraft is extremely fast on its own (especially when you control Zerg) and Hearthstone turns have a time limit, so you can’t chill there browsing cards either. Switching between the two can get messy easily. He handles things pretty well, but it gets messy for CranK too.
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