That's a 20 percent rise from 2009. All regions showed growth in the market, not just PC heavy China. The continued rise of digital is the lead cause.
The third Horizons report, created with assistance from analysts DFC Intelligence, was issued at this year's GDC in San Francisco. Digital store fronts, microtransactions and points cards are the leading factors for PC videogame revenue growth they reveal.
By 2014 the PCGA expects growth to hit $23 billion. See the report for yourself.