The funny thing is, I had a feeling it would be. But here's the clincher. Are you sitting down?
Xbox Live Arcade has ported
n. Not the shitty flash version I linked with only 30 episodes, not the ridiculously hard downloadable version with 60 episodes, but a new version in high definition with a level editor and multiplayer. They're calling it "n+." It is gorgeous, and I have to wonder whether the control scheme won't work a little better for me than the PC did.
Goddamnit XBLA! Why must you tempt me so? I'm not even finished with Rez yet!