I thought the DVD, and the entire idea is damn spiffy. In order to sell seriously, i.e. at all, there would have to be a massive number of branches and paths on the disc. I liked the story, and I found the animation to be well-done and smooth. Gotta love the earth elemental. They're one of my favorite monsters.
I've only gone through the thing once, so I've got some more paths to explore. All in all, I hope that I soon get a chance to buy the real thing. I liked it.