I played hours with the demo tonight and thought this would be fantastic to have on my iPad and sit down on the sofa or play it in bed at night when I can't sleep. Sitting in front of a desk with a bowed back, reaching out for the mouse, and with a noisy PC case next to me just isn't the real thing. I mean, it's almost impossible to relax.
As others have pointed out already, a touch screen (multi-touch/zoom/scroll) is the ideal platform for meditative and stylish games like Eufloria. I don't think the iPod/iPhone screens are big enough, though, but the iPad is for sure. It is also very likely that the next generation iPad will feature an even higher "Retina" screen resolution.
You will certainly see a huge success on the App Store. This stylish and beautiful game is a definite must have! Let alone it's a nice gadget to showcase how cool one's iPad is ;-)