We've long known about Nintendo's war chest, which in 2012 was $10 billion in the bank and $6 billion in additional assets. Those numbers have shrunk (probably due in part to the large scale share buyback for investors with cold feet), but Nintendo's consolidated balance sheet for the year still shows it in a good spot.
Nintendo still has about $4.7 billion in the bank (474,297 million yen in "cash and deposits") and $10.1 billion in current assets ($12.9 billion in total assets). Despite lower net sales and income than just about any of the last four years, the company's total assets remain steady.
Also, why does JP Morgan Chase Bank own more than 10% of Nintendo?