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<blockquote data-quote="ggroy" data-source="post: 5062879" data-attributes="member: 83805">For the most part, it does make things more like 2E AD&amp;D and some older rpg rulesets from the 1980's.In 2E AD&amp;D, the to-hit d20 roll number for a hit from a fighter attacking a monster with a particular AC_desc (descending AC) is:21 - level_fighter - AC_desc(THAC0 for a fighter is 21 - level_fighter).Changing the AC_desc from descending to ascending AC_asc (ie. AC_desc = 20-AC_asc), the to-hit d20 roll number for the same fighter attacking:1 - level_fighter + AC_ascIn the case where AC_asc scales approximately as ~ level + AC, where AC is an &quot;intrinsic&quot; ascending AC stripped of the level dependency and/or magic enhancement, the to-hit d20 roll number for the same fighter attacking becomes:1 + AC + (level_opponent - level_fighter)which is almost identical to my previous proposal.&nbsp; (One could eliminate the 1, if AC_asc is redefined as being 21-AC_desc).Now that I think about it more, this d20 to-hit target number of1 + AC + (level_opponent - level_fighter)is similar in to how things are done in the Chaosium Basic Roleplaying system, if the percentile dice mechanics are converted to a d20 for the Basic Roleplaying resistance table.An older version of the Champions rpg Hero system also has a similar mechanic with a (level_opponent - level_fighter) type adjustment.&nbsp; In the Hero system, a hit is rolling 3d6 less than or equal to:11 + (OCV_attacker - DCV_defender)where OCV_attacker = attacker's DEX/3, DCV = defender's DEX/3.</blockquote>

[QUOTE="ggroy, post: 5062879, member: 83805"] For the most part, it does make things more like 2E AD&D and some older rpg rulesets from the 1980's. In 2E AD&D, the to-hit d20 roll number for a hit from a fighter attacking a monster with a particular AC_desc (descending AC) is: 21 - level_fighter - AC_desc (THAC0 for a fighter is 21 - level_fighter). Changing the AC_desc from descending to ascending AC_asc (ie. AC_desc = 20-AC_asc), the to-hit d20 roll number for the same fighter attacking: 1 - level_fighter + AC_asc In the case where AC_asc scales approximately as ~ level + AC, where AC is an "intrinsic" ascending AC stripped of the level dependency and/or magic enhancement, the to-hit d20 roll number for the same fighter attacking becomes: 1 + AC + (level_opponent - level_fighter) which is almost identical to my previous proposal. (One could eliminate the 1, if AC_asc is redefined as being 21-AC_desc). Now that I think about it more, this d20 to-hit target number of 1 + AC + (level_opponent - level_fighter) is similar in to how things are done in the Chaosium Basic Roleplaying system, if the percentile dice mechanics are converted to a d20 for the Basic Roleplaying resistance table. An older version of the Champions rpg Hero system also has a similar mechanic with a (level_opponent - level_fighter) type adjustment. In the Hero system, a hit is rolling 3d6 less than or equal to: 11 + (OCV_attacker - DCV_defender) where OCV_attacker = attacker's DEX/3, DCV = defender's DEX/3. [/QUOTE]

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