US mobile games firm Mpowerplayer has announced that more than 12 million mobile games demos have been served through its PC-based try-and-buy store.

Describing itself as the 'iTunes of mobile games', the store is a Java application run through your web browser, which lets you try out games and then buy them.

Those 12 million demos have been played by more than a million gamers. We've been having a play with the service, and it's definitely slick, giving you a good sense of how games play.

It's certainly an experience trying to play Project Gotham Racing with a mouse and an onscreen keypad, too.

Have a go by heading here, and tell us what you think.