When do you get extra content in Riviera The Promised Land for PSP?

In "Riviera: The Promised Land" for PSP, players can unlock extra content by achieving specific conditions during their playthrough. This includes completing the game multiple times and making different choices in key moments, which can lead to new character interactions, story paths, and additional items. Additionally, collecting all the items and characters can also grant access to bonus content. Engaging fully with the game's mechanics and story will enhance the overall experience and reveal hidden features.