Mobile gaming revenues would reach $6.3 billion worldwide in 2011, up from $4.5 billion in 2008, according to the June 2008 data released by Gartner.

Gartner also said that these revenues were promising in regions with low PC and game console penetration, as well as among both low- and high-income users, eMarketer reported.

Asia-Pacific will still be the largest market for mobile games, with revenues up from $2.3 billion in 2008 and over $3.4 billion by 2011. In North American, the market is expected to reach $1.2 billion in 2011, up from $845 million in 2008, eMarketer reported.

Gartner's new global projection for 2011 is about half lower than what it announced last year, mostly due to ongoing economic concerns.

Estimates by other companies are similar. Understanding & Solutions predicts mobile games would bring in $6 billion revenues in 2011, up from $3.6 billion in 2007, and Juniper Research projects mobile gaming revenues would reach $16 billion in 2012, eMarketer reported.