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<blockquote data-quote="ggroy" data-source="post: 4795725" data-attributes="member: 83805">Just recently found the three 1st ed AD&amp;D core books at a garage sale.&nbsp; I wondered what the 1st ed rules would look like in the 3rd or 4th ed D&amp;D format and came up with this for the combat rules with these assumptions:rolling a natural 20 on a d20 = critical hitmelee attack = 1d20 + base level attack bonus + strength mod ranged attack = 1d20 + base level attack bonus + dexterity mod + range penaltyAC = 10 + armor bonus + shield bonus + dexterity modWith these assumptions, the information in the 1st ed AD&amp;D player and monster attack matrices in the DM guide basically reduces to:fighters, paladins, rangers, bards and 0 level halflings and humans attack matrix[HTML]level&nbsp; &nbsp; &nbsp; &nbsp; base level bonus to attack0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; -11-2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 03-4&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +25-6&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +47-8&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +69-10&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +811-12&nbsp; &nbsp; &nbsp;&nbsp; +1013-14&nbsp; &nbsp; &nbsp;&nbsp; +1215-16&nbsp; &nbsp; &nbsp;&nbsp; +1417+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +16[/HTML]clerics, druids and monks attack matrix[HTML]level&nbsp; &nbsp; &nbsp; &nbsp; base level bonus to attack1-3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 04-6&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +27-9&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +410-12&nbsp; &nbsp; &nbsp;&nbsp; +613-15&nbsp; &nbsp; &nbsp;&nbsp; +816-18&nbsp; &nbsp; &nbsp;&nbsp; +1019+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +11[/HTML]thieves and assassins attack matrix[HTML]level&nbsp; &nbsp; &nbsp; &nbsp; base level bonus to attack1-4&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; -15-8&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +19-12&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +413-16&nbsp; &nbsp; &nbsp;&nbsp; +617-20&nbsp; &nbsp; &nbsp;&nbsp; +821+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +10[/HTML]magic users and illusionists attack matrix[HTML]level&nbsp; &nbsp; &nbsp; &nbsp; base level bonus to attack1-5&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; -16-10&nbsp; &nbsp; &nbsp; &nbsp; +111-15&nbsp; &nbsp; &nbsp;&nbsp; +416-20&nbsp; &nbsp; &nbsp;&nbsp; +721+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +9[/HTML]monsters attack matrix[HTML]monster hit dice&nbsp; &nbsp; base level bonus to attackup to 1-1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -11-1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 01&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +11+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +22-3+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +44-5+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +56-7+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +78-9+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +810-11+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +1012-13+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +1114-15+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +1216+&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +13[/HTML]The armor listed in the 1st ed player's handbook reduces to:[HTML](non-magic) armor&nbsp; &nbsp; &nbsp; &nbsp; AC bonusshield&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +1&nbsp; &nbsp; leatheror padded&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +2studded leather&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +3or ring mailscale mail&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +4chain mail&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +5split or&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +6banded mailplate mail&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +7[/HTML]The strength and dexterity modifiers in the 1st ed player's handbook look like:strength[HTML]score&nbsp; &nbsp; &nbsp; &nbsp; attack adjustment bonus&nbsp; &nbsp; &nbsp; &nbsp; damage adjustment bonus3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -14-5&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; -2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -16-7&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 08-9&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 010-11&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 012-13&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 014-15&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 016&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +117&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +118&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +218/01-50&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +318/51-75&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +318/76-90&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +418/91-99&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +518/00&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; +6[/HTML]dexterity[HTML]score&nbsp; &nbsp; &nbsp; &nbsp; reaction/attack adjustment bonus&nbsp; &nbsp; defense adjustment bonus 3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -44&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -35&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; -26&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; -17&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 08&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 09&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 010&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 011&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 012&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 013&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 014&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 015&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +116&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +217&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +318&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +3&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +4[/HTML]Has anyone tried creating a &quot;retro clone&quot; which consists of 1st ed AD&amp;D being redone using the d20 style combat of 3E or 4E?&nbsp; I suppose if somebody hasn't done so yet, these combat matrices would be the starting point for such a clone.[D][D][D][PHP][PHP][HTML][CODE][PHP][/PHP][/CODE][/HTML][/PHP][/PHP][/D][/D][/D]</blockquote>

[QUOTE="ggroy, post: 4795725, member: 83805"] Just recently found the three 1st ed AD&D core books at a garage sale. I wondered what the 1st ed rules would look like in the 3rd or 4th ed D&D format and came up with this for the combat rules with these assumptions: rolling a natural 20 on a d20 = critical hit melee attack = 1d20 + base level attack bonus + strength mod ranged attack = 1d20 + base level attack bonus + dexterity mod + range penalty AC = 10 + armor bonus + shield bonus + dexterity mod With these assumptions, the information in the 1st ed AD&D player and monster attack matrices in the DM guide basically reduces to: fighters, paladins, rangers, bards and 0 level halflings and humans attack matrix [HTML] level base level bonus to attack 0 -1 1-2 0 3-4 +2 5-6 +4 7-8 +6 9-10 +8 11-12 +10 13-14 +12 15-16 +14 17+ +16 [/HTML] clerics, druids and monks attack matrix [HTML] level base level bonus to attack 1-3 0 4-6 +2 7-9 +4 10-12 +6 13-15 +8 16-18 +10 19+ +11 [/HTML] thieves and assassins attack matrix [HTML] level base level bonus to attack 1-4 -1 5-8 +1 9-12 +4 13-16 +6 17-20 +8 21+ +10 [/HTML] magic users and illusionists attack matrix [HTML] level base level bonus to attack 1-5 -1 6-10 +1 11-15 +4 16-20 +7 21+ +9[/HTML] monsters attack matrix [HTML] monster hit dice base level bonus to attack up to 1-1 -1 1-1 0 1 +1 1+ +2 2-3+ +4 4-5+ +5 6-7+ +7 8-9+ +8 10-11+ +10 12-13+ +11 14-15+ +12 16+ +13 [/HTML] The armor listed in the 1st ed player's handbook reduces to: [HTML] (non-magic) armor AC bonus shield +1 leather or padded +2 studded leather +3 or ring mail scale mail +4 chain mail +5 split or +6 banded mail plate mail +7 [/HTML] The strength and dexterity modifiers in the 1st ed player's handbook look like: strength [HTML] score attack adjustment bonus damage adjustment bonus 3 -3 -1 4-5 -2 -1 6-7 -1 0 8-9 0 0 10-11 0 0 12-13 0 0 14-15 0 0 16 0 +1 17 +1 +1 18 +1 +2 18/01-50 +1 +3 18/51-75 +2 +3 18/76-90 +2 +4 18/91-99 +2 +5 18/00 +3 +6 [/HTML] dexterity [HTML] score reaction/attack adjustment bonus defense adjustment bonus 3 -3 -4 4 -2 -3 5 -1 -2 6 0 -1 7 0 0 8 0 0 9 0 0 10 0 0 11 0 0 12 0 0 13 0 0 14 0 0 15 0 +1 16 +1 +2 17 +2 +3 18 +3 +4 [/HTML] Has anyone tried creating a "retro clone" which consists of 1st ed AD&D being redone using the d20 style combat of 3E or 4E? I suppose if somebody hasn't done so yet, these combat matrices would be the starting point for such a clone. [D][D][D][PHP][PHP][HTML][CODE][PHP][/PHP][/CODE][/HTML][/PHP][/PHP][/D][/D][/D] [/QUOTE]

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