Today 24 Caret Games Co-founder Matt Gilgenbach has shared a video of Retro/Grade for PSN, which will be playable at PAX Prime and fans can win a change to be in the video game's credits.

To quote: We've been pretty silent for the past year about Retro/Grade, but that's because 24 Caret Games has been hard at work transforming our prototype shown at the 2009 Independent Games Festival into an awesome PSN title.

As you can see in the screenshots, all the graphics have been redone in order to take advantage of the power the Playstation 3 provides. Retro/Grade will look amazing on your HDTV because it runs at Full HD (1080p) with anti-aliasing at a silky smooth 60 frames per second.

On the gameplay side, we've been very busy working to ensure that it is the most fun possible. After some serious focus testing, any rough spots in the gameplay have been smoothed out.

Our composer, Skyler McGlothlin, has worked hard to improve all our original tracks for the game. We've adjusted the gameplay patterns for maximum enjoyment. In order to help people wrap their minds around our time bending concepts, the tutorial has been greatly improved.

If you are going to the Penny Arcade Expo in Seattle on September 3-5, stop by booth 3008! Retro/Grade will be playable, and we are giving out posters and info cards. As well, you can win a Retro/Grade t-shirt by beating our challenge.

On top of all that, we are having a contest to get your name in the credits for Retro/Grade! The gamers with the top five scores using the guitar controller and the top five scores with the DUALSHOCK 3 at PAX will be mentioned in Retro/Grade's credits. It should be a great time, so be sure to stop by!

More PlayStation 3 News...