In my games, which use a system I am tentatively calling Old Skull System, the main Mechanic involves rolling a d20 and scoring a value equal to or under than the Attribute Score and above a Difficulty score. In combat, the Difficulty is determined by subtracting the Opponent's HD from the character's Level. If the Opponent's HD is lower than the character's Level, there is no Difficulty and it's only a roll equal to or under test. However, this mechanic of lowering the Difficulty with the character's Level doesn't really happen in other Attribute Tests. Characters become more competent as they manage to increase their scores, and acquire new abilities, but jumping a 20 feet wide chasm is as difficult to do in the first level as it is in the 5th level. Characters may increase their Attributes and become more competent, or their Archetype Abilities might be able to help them more, but the Difficulty is the same. So if you want to make combat even more c...
A place to share, comment and wonder about old school RPGs and the projects I am working on.