ChartTrack has announced that Microsoft’s Halo 3: ODST on the Xbox 360 has topped the all-format UK charts for the last week in September.

Halo 3: ODST got off to a blistering start, with 64% of the week’s sales being achieved in the first 24 hours after launch.

However, ChartTrack noted that Halo 3 itself sold far more copies in its initial week when it was released two years ago.

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