With games like Resistance Retribution having the capability to interact with its PlayStation 3 counter part, Resistance 2. It leaves one to wonder if the PSP version of Rock Band, Rock Band Unplugged, would gain such a talent.

However, despite the crazy idea 1UP had about the PS3 version of Rock Band, or Rock Band 2, sharing sharing content or unlocking features for Rock Band Unplugged on PSP. It seems that Harmonix and MTV Games weren’t on the same page about it.

When 1UP asked Harmonix about their crazy idea at a demo event last week, it was revealed to them that they have no such plans to ingrate that with  Rock Band Unplugged on the PlayStation Portable.

While many of us are home enjoying the PSP version of Resistance, when talking to the PlayStationBlog in a ‘little chat’, director Chris Reese revealed that Bend Studios has ‘no plans’ for Resistance: Retribution downloadable content.

“Currently there are no plans for DLC,” said Retribution technical director Chris Reese.

Creative director John Garvin did add that more Retribution themes and wallpapers should be available on the PSN soon, though, so technically there will be new content.

Announced back at E3 for the PlayStation Portable, Resistance Retribution looks to bring life on the PlayStation Portable with the style of Resistance. Lucky, for the fans of the ground smashing title Resistance: Fall of Man, and 2, and the upcoming title Resistance Retribution, they will get to sample the game very soon.

When you pre-order Resistance Retribution through Amazon US before January 12th, you will receive an unique code which allows you to download and play, with early access to it, the Resistance Retribution demo.

The full game will support Resistance 2, similar to what is between the Wii and Nintendo DS. Only here it’s different. Once you hook up your PSP to your PS3, you will be able to play an alternate story through the special ‘Infected Mode’.

But, sadly, the demo does count for people in North America, mainly because restrictions to regions where the Amazon US ships to.

One of Sony’s upcoming PSP games, Resistance Retribution, will use a newly developed technology called “PSP Plus.” So what is “PSP Plus” and why does it sound like “WiiMotionPlus”? According to the guys over at Joystiq, PSP Plus is a new function that will allows players of Retribution to connect their systems to the PS3, in order to enable use of PS3 wireless controllers. Using the DualShock will enable dual-analog control in the game. In addition, rumble will be supported. Other games may be able to potentially utilize PSP Plus — however, it is currently a Retribution-only tech. And to answer the other question I really do not know why they call it “PSP Plus” it’s just the name, or it could be because it adds to the PSP.