Sourge of the Demon Wolf was developed during the course of one of my GURPS campaigns around 2000. I knew the players were planning to travel along a specific road from the events of the last session. There was a small chance that something different would have occurred but given their goal the odds were high they were going to do. Remember that once a sandbox campaign gets going,it gets easier to predict the players are looking to do for the next session.
What does it suggest to you?
Thinking of ideas I was inspired by a movie called the Brotherhood of the Wolf about the Beast of Gevaudan. Now I have a basic situation, a monster terrorizing the countryside. What the monster? A wolf of course, but abnormally powerful wolf. Where was the wolf doing this? That was easy for me as a lot of that region were medievalish manorial villages. So I picked one near the road the PCs were travelling on.
Now I turned to who the demon wolf was terrorizing. I knew it was a fantasy medieval villages. So I came up wtih a reeve, a village priest, and added two characters for local color. A old guy who "minded" the local tavern and Yoluf a trapper that could act as a guide if the players hit it off with the Reeve.
To connect the village to the mage I had the apprentice be sloppy and left much of what she used for the botched summon out at a site in the wilderness to be found.
So in the next post I will explain how I complicated it.