Guerrilla Games is to release downloadable chapters for its action sequel Killzone on PS3, internet reports are claiming.

Details are sketchy, but it looks like the content will be appear post release of the full game and comprise of new levels or chapters, potentially continuing the single-player storyline.

Whether they are huge standalone episodes (similar to Half-Life 2' s Episode 1 and 2) or smaller levels remains to be seen. According to the reports, gamers will be able to download the content via PlayStation Store - for cash.