Rockstar has been one of the main supporters of the new PSP digital download format, and they have announced that they plan to put all of their handheld titles on the PlayStation Network soon, as well as releasing a dedicated Rockstar-branded store section.

Many of Rockstar's PSP games can already be purchased on the European PSN store, but 1UP are reporting that now US gamers can expect to play Grand Theft Auto: Liberty City Stories and Vice City Stories come 22nd October. That's when the new storefront will be implemented, as well as the addition of Chinatown Wars, which we'll hopefully see on the European store too.

Good news for those who have recently purchased a PSP Go and are looking for some classic sandbox-based mayhem.