From the designer: Maustrap is a pre-Mausritter campaign game mode. You and 2-5 friends will each take 4 common mice, who are in debt, on a grueling and grinding adventure; deep into the hearts of dungeons. Treasure hunting, seeking for the right amount of pips to set you free from your financial burden. In this funnel you will test your characters to their limits and most likely, to their demise. If, and that is a huge if, your character mice survive, these lucky mouse adventurers will become the starting mice of your campaign. So, tread lightly, heck, rather throw caution to the wind and go find some treasure and pay off your debt. The rules help keep the story you tell consistent, interesting and challenging.