Buzz!: Quiz World

Buzz!: Quiz World is a quiz game developed by Relentless Software and published by Sony Computer Entertainment Europe in late 2009 for the Sony PSP and Sony Playstation 3.

The game featured many DLCs, but with the shut down of the PSP frontend online shop they can no longer be obtained on the original console. The game appears to have been delisted from the European Store, along with its DLCs for both consoles. The PS Vita release of the PSP version allows to download most if not all of the content, but to be able to get everything on the original hardware a Sony PS3 is needed (see below for details). Unlike games, DLCs on Playstation 3 are region locked, meaning that PAL games are not compatible with the North American downloadable content.

How to obtain
At least in North America, the DLCs can still be obtained on the PS Vita (PSP) and PS3 releases from the Playstation Store or, on the PSP, by purchasing the PSP version on a Playstation 3 system and then transferring them on the handheld console.

A guide on how to transfer content can be found here.