These rules are some of the most logically written and usable rules I've seen for dealing with lava and volcanoes. Really. After getting this download, you'll never need another word on the subject. And it is portable to almost any game system in existence (even LARPing, though I might not recommend it too far depending on your group's insistance on realism). And the download comes loaded with numerous charts and graphs to explain the rules to your players. I've got an itch to put my players though a Hawaiian-themed adventure, and this is just what I needed for those times where the PCs are dumb enough to go traipsing around the caldera of Mauna Loa...
[5 of 5 Stars!]