Released in September, 2009, Halo 3:ODST (originally Halo: Recon) was a prequel to Halo 3, bridging the gap between the second and third game.

2009年9月发售的《光环3：地狱伞兵》（原名光环：侦查队）是《光环3》的前传，衔接起了第二作和第三作。

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And Halo 3 and Halo 3:ODST were both sold early, by accident, reportedly.

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While they were at no point bad, Halo 3 was somewhat generic and predictable through a lot of the storyline and ODST was a downloadable expansion gone large.

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