It may seem a bit odd, but it's actually really well done. Low magic, in the form of shamanism and "dark creatures" actually exist in the world, along side normal creatures and other tribes and humanoids. One of the things that I look for these days in an RPG is simplicity and Wurm has a simple system and simple character sheet.
Difficulty Thresholds range from Very Easy (3) to Impossible (13).In most cases, in order to perform a successful action, a character must roll 2d6 and get a result superior or equal to a Threshold that determines the difficulty of the action. If the character possesses a special Strength that can help him, he adds 1d6 to his dice roll. If he’s afflicted with a Weakness that may hamper him, he will subtract 3 from his roll.
