Rules Basics

This is a reference section for both the basic rules as well as house rules.

GURPS Official Rules / Reference

Success Rolls

A success roll means to roll 3d6 against a particular target, be it skill value, stat, or other special value.

Example: to stop a heavy door, you might need to make a success roll against strength (ST). If your character has a strength of 12, any roll on 3d6 of 12 or less would be considered a success.

Note that some difficult tasks may impose a penalty (e.g. -2) and some easy tasks may grant a bonus (e.g. +2). These apply to the target of the roll. Stopping a particularly heavy door may require a success roll against ST-2. If your ST was 12, then the target would be 12 - 2 = 10. Any roll of 10 or less would be a success.