Euclideon's stuff is pretty amazing, but there are some fundamental things that make it inferior for most real-time games. For example, it can't do dynamic lighting, because each of the "dots" that make up their world has a color value attached to it that already has lighting to it and I'm pretty sure each dot doesn't have a normal on it (which is essential for any decent lighting). I could be wrong about it not having a normal though, just my predictions.
Having said that, I am still quite excited to see what they come up with, but I'm not expecting it to totally outdo every product on the market. Low expectations; high hopes.