Cave region-locked Red Katana Shin, so you won’t be able to run it unless you have a Japanese Xbox 360. You can still play part of Red Katana Shin, though!
Makota Asada posted on the Cave blog that a playable demo for Red Katana Shin is in the works. Asada wrote spent so much time working on the demo he has to spend his Golden Week vacation on Instant Brain, an upcoming adventure game for Xbox 360.
A release date for the demo was not announced. While you’re waiting, you might want to check out Nin2-Jump. Cave’s first original game for Xbox Live Arcade is available today for 400 Microsoft Points ($5).