As soon as my internet kicked back in I was going to upload the Echochrome demo, but I see Andrew over at PSP Fanboy already did the hard work for me! If you have a Japanese PlayStation Network account you can pick up the PS3 version on the Japanese store. This demo was actually shown before at Tokyo Game Show and a modified version appeared at GDC. The short trial goes through the basics and explains the subjective laws that govern the world.
If the demo satisfies and you cannot wait for more the Asian PSP version, Echochrome Plus, is scheduled to come out March 20. This is one day after the Japanese release, but this version includes good old English.