Prinny: Can I Really Be the Hero?

 is a platform game developed and published by Nippon Ichi Software on November 20, 2008 in Japan, on February 17, 2009 in North America and on June 26, 2009 in Europe for the Sony PSP. The game featured 3 DLCs, but with the shut down of the PSP frontend online shop they can no longer be obtained on the original console. The PS Vita release of the PSP version allows to download all of the content, but to be able to get everything on the original hardware a Sony PS3 is needed (see below for details).

How to obtain
The DLCs can still be obtained on the PS Vita release 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.