Mobile sites for sister titles silicon.com and ZDNet.co.uk will follow shortly, according to the company, with recently launched environmental website SmartPlanet going mobile later this year.
The CNET mobile and GameSpot mobile sites, which will be accessible from any internet-enable mobile device, will offer free news and reviews to users, who can also receive updates by sending a text message.
The publisher hopes the new platform will appeal to its technology-savvy audience and advertisers looking to move into mobile.
"The ability to deliver this kind of content has been around for a while, but the UK market is only just reaching the stage where we feel it is a viable proposition," said Geoff Inns, business development director of CNET Networks UK.
"Mobile internet is attracting the critical mass market volumes we require and a recent upsurge in mobile advertising demand means that our new sites can offer clients the solutions they need."
CNET has teamed up with mobile operator 3 for the launch and content from both sites will appear on the operator's own portal. The publisher is currently negotiating content deals with additional UK mobile operators.
The new sites are sponsored by N-Gage, Nokia's mobile gaming brand, and are both signed up to Nokia's mobile advertising network.
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