The announcement came after AOL's initial agreement with Gigex closed on 10 August. Financial terms were not disclosed.
Founded in 1995 and based in San Francisco, privately-held Gigex targets the mainstream gaming audience.
GameDaily will become the main video games brand within the AOL Games network, and will be united with content and community features currently found on the existing AOL Video Games website.
"Video games are now a vital piece of the entertainment landscape along with music, video and online communities," said Gigex chief executive Mark Friedler.
GameDaily is AOL's fourth acquisition of 2006, following Userplane last week, Lightningcast in May and Truveo in January.
Other recent corporate acquisitions by AOL include Music Now, Weblogs, Xdrive, and Wildseed, all in 2005.
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