GameJump's 300 free mobile games
Who's paying for them? Advertising, of course

The worlds of mobile games and advertising haven't collided much in the past, but that's changing fast. In 2007, we'll see ads starting to make their way into the games you buy from your operator's portal, hopefully reducing the price you pay for them.
In the meantime, US firm Greystripe is cracking on with its GameJump portal, which has just signed up a bunch of new publishers, taking its catalogue to over 300 mobile games. And because they include adverts, they're all free to download (although you'll still pay data charges).
35 game developers are now supplying games to GameJump, with seven just added to the list: Most Wanted Entertainment (Magnetic Joe and Inchville), Mobile Amusements (Mouse Panic and SuDoku Dragon Gems), Watagame (the Era of Eidolon series), OrangePixel (Toddlers and Rocket Boy), Tracebit (Tank Wars and Illuminator), Fugu Mobile (The Hero and Super Tonic Man), and Gameleons (Viki Vans and Raptor Heavy Squad).
These games might not all be household names, but the fact that they're being offered for free may encourage gamers to give them a try. Not everyone's convinced though – read our feature on advertising and free mobile games.