Volcanoes and Glaciers: Bloodsong of the Spheres

This was my entry for the 2003 Iron Game Chef: Simulationist contest on The Forge.

In a nutshell

Mix Norse mythology with Michael Moorcock's Multiverse, and you have "Volcanoes and Glaciers: Bloodsong of the Spheres."

After Ragnarok, inhabitants of New Midgard the existence of unknown numbers of other Spheres (universes), each with their own copy of the Nine Worlds invarious stages of development. Now they explore, trade with, and defend themselves from the other inhabitants of the Spheres, as they try to find their place in the multiverse.