Microsoft has delayed the release of Halo 2 for Windows Vista for a second time.

Earlier this month, PC Advisor sister site GamePro reported that Halo 2 for Windows Vista was summarily delayed from its original release on 8 May to 22 May. Well, 22 May rolled around, Halo 2 Vista didn't appear in shops, and hardly anybody noticed or made a fuss. Until now, of course.

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Yesterday, Microsoft made another announcement regarding the release of Halo 2 Vista. The new date for North America is 31 May, while the date for the European release has been set to 8 June.

According to a recent post on Joystiq, a Microsoft representative told the blog that instead of Halo 2, Shadowrun has now been given the title of the first game to debut for the Games for Windows Live service. The FASA-developed first-person shooter game Shadowrun will be released to both Vista gamers and Xbox 360 owners on 29 May.

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