I tried to post this on Saturday, but the boards were not accepting new posts.
I had an interesting experience over Thanksgiving: I ran OSM for five kids, age 9-13, most of whom had never played D&D before, or had played once.
They had a great time. I got a headache the size of Mount Kilimanjaro.
I wouldn't recommend this adventure for that age group, for the same reasons that I would recommend it for a teen or adult gaming group:
* The adventure is full of creepy, gory, slightly campy horror. I had to change a lot of things on the fly so that I wouldn't be giving my cousins nightmares.
* The adventure makes full use of the rules, and allows for all sorts of non-combat solutions to problems. I had to cut out some of that fun, or else explain over and over how to figure out (for example) a Balance check.
* The adventure has several moderately challenging puzzles in it. I was able to provide some pretty blatant clues to some of the puzzles, and for other ones, one of the kids would have a flash of insight and solve the puzzle before I got to my hints.
I'm glad you're picking it up; like I said, this is a great adventure, full of cool little doohickeys.
On a related note, I'm really trying to encourage my 13-year-old cousin to run games for his 9-year-old triplet siblings (I figure it'll lessen my headaches at future family gatherings). Besides The Burning Plague, what are good free low-level adventures that would be suitable for reasonably macabre 9-year-olds?
Daniel