http://story-games.com/forums/discussion/11348/microdungeons-i-roll-to-see-if-i-have-shoes-on/p1

• Say what you do and roll a number of d6s.
• If the sum of your roll is higher than the opposing roll (either another player or the DM), the thing you wanted to happen, happens.
• The number of the d6s you roll is determined by the level of skill you have.
• At start, you have only one skill: Do anything 1.
• If you roll all sixes on your roll, you can get new skill one level higher than the one you used for the action. The skill must be a subset of what happened to you in the action (Say, Athletics 2 if you were climbing a wall, or Teeth of Biting 2 if you were eating a cake).
• For every roll you fail, you get 1 XP.
• XP can be used to change a die into a 6 for advancement purposes but not for success purposes.