After a difficult year, Microsoft Corp.’s video gaming chief is looking back. continues to look for acquisitions and maps out how to compete and collaborate in the portable gaming and mobile retail markets.

Deals that add ‘geographic diversity’, including in Asia, could be worthwhile, Phil Spencer said in an interview at Bloomberg’s New York office on Tuesday. Buying another mobile company would add to the titles Microsoft picked up in its $69 billion acquisition of Activision Blizzard last year, he said.