Here’s a comparison for you: in the second quarter of this year, Warner Music Group reported $654m in revenues. Meanwhile, Japanese social mobile games company DeNA reported $609m in revenues.

It’s a sign of the rapid growth of social gaming on mobile phones in Japan, with DeNA busily trying to expand globally and take on US rival Zynga. DeNA has 43m members of its Mobage mobile gaming community in Japan alone.

The company’s global ambitions are proceeding apace, too. Inside Mobile Apps notes that DeNA’s games Blood Brothers and Ninja Royale have been racking up average revenue per daily active user (ARPDAU) of around $1 – way ahead of the averages expected from such games.