My kids, ages 7 and 9, have been begging me to play an RPG with them; having a few free days around Christmas, I finished fleshing out a bit of lore, and built a one-shot campaign for them. It, too, is set in this world, a few short years before the age of the beastmen truly begins. It's a bit long, as it was actually three sessions, stuck in between shopping, presents, and general holiday spirit.
It is the year 3781, 7 years before the Wall of Mareten is completed, and 19 years before the Age of the Beastmen. The Council of Five - that is, the top diplomats of the Humans, Elves, Dwarves, Halflings, and Gnomes - called two of its last heroes to begin what may be the most important mission of the century. Beastmen activity was increasing; incursions were digging further into civilized territory than ever before. The Elves (that is, the True Elves) in the West were pressed to the breaking point; already, the southern city had closed its gates. Roads were not safe. Worse, rumors began to filter in of a danger to the North. If the Northern Tribes were conquered, their precious knowledge would be lost.
Thus, the Council summoned Gimli Thorson, Dwarvish Craftpriest, and Evindal Elaric, Elven Enchanter, to begin a perilous journey to warn the people of the north.