More than 1.4 million people have gone online to play the title since its launch and more than four million online games of Halo 3 were logged in the last 24 hours.

BBC: NEWS | Technology | Halo 3 sales top ?84m in 24 hours

The legendary developer behind the Halo series gave us our first, fleeting look at its new online shooter yesterday, and we saw a more matte vision of a post-apocalyptic sci-fi future taking shape.

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After a little online research, I discovered this phenomenon is called the health halo effect.

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