User blog comment:Stormjay Rider/The Volcanic and Obsidian worlds/@comment-4724333-20130829003521

I'm opposed to merging them. The environments are different, as are the enemies. Sure, some say that Obsidian comes from volcanos, but I don't think that the "Obsidian" part was supposed to be literal. I think it was just to convey the atmosphere. And personally, I don't think that tall, black, smooth pillars of rock would look good next to volcanos. The contrast just wouldn't work.