Marketing research firm Newzoo estimates China will accrue approximately $22.2 billion in 2015, followed closely by the United States with $21.96 billion and Japan with $12.3 billion.
Newzoo reports multiple reasons for China's dominance, including having a large population and number of people with internet access. While mobile gaming has become popular in Asian regions, the PC remains the most popular gaming platform in China.
The Chinese government recently lifted a ban on home video game consoles, opening up the market for manufacturers like Sony, Microsoft, and Nintendo to sell their respective hardware. Specifically how this will impact the market remains to be seen.