Jack Tretton, President & CEO Sony Computer Entertainment America, has thanked gamers for a great 2009 for the PlayStation brand. Included in his post are some details on the success of MAG, the 256-player online FPS released exclusively on the PS3 in January.

"Over half a million of you have already chosen your allegiance in MAG, and have played over 270,000 games in the Shadow War," stated Tretton on the Official PlayStation Blog.

According to NPD figures showing sales results for January 2010 in the US, MAG failed to chart in the Top 10, meaning sales of under 171,200 units. MAG has remained a Top 10 game in the UK chart since its release on January 29.

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