I recently made some pieces for Harmonix's Kickstarter: Amplitude HD. I had a lot of fun and freedom designing the promotional work for the project. It's not often that you get to re-imagine the look and feel of a game made from the 90's into something sleeker and fresher.
The original game was pretty literal in it's interpretation of cyberspace and possessed a plethora of colors. My main goal with these was to organize the color, tone down the track, and insert the color information mostly into the gems.