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d20 Monsters to OD&D/BD&D
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<blockquote data-quote="jdrakeh" data-source="post: 4241699" data-attributes="member: 13892"><p>This began as a <em>Fight On!</em> article submission, though due to some personal issues (including a recent job layoff) I'm not going to be able to finish it. . . so I'm posting the raw maths here. When dividing, round results up to the nearest whole number: </p><p></p><p><strong>d20 HP to O/BD&D Health Dice</strong></p><p></p><p>d20 HP / 6 ≈ OD&D Hit Dice</p><p>d20 HP / 8 ≈ HD&D hit Dice</p><p></p><p><strong>d20 AC to O/BD&D Armor</strong></p><p></p><p>19 - d20 AC ≡ OD&D Armor</p><p>19 - d20 AC ≡ BD&D Armor</p><p></p><p><strong>d20 BAB to O/BD&D Weapon Damage Bonus</strong></p><p></p><p>d20 BAB / 2 ≡ OD&D Weapon Damage Bonus</p><p>d20 BAB / 2 ≡ BD&D Weapon Damage Bonus</p><p></p><p><strong>d20 Speed to O/BD&D Movement</strong></p><p></p><p>d20 Speed in 1" Squares x 2 ≈ OD&D Movement in Inches</p><p>d20 Speed in Feet x 4 ≈ BD&D Movement in Feet</p><p></p><p><strong>Special Attacks / Defenses</strong></p><p></p><p>Unfortunately, in D&D, these abilities always have been (and probably always will be) exception-based. Pick and choose special attacks, defenses, and non-combat abilities from the d20 list as you (the DM) deem interesting. </p><p></p><p>--- </p><p></p><p>You will note many approximations above. This is necessary given that raw values for certain things have changed wildly between editions of the game (movment rates for certain creatures being a key example). In calculating approximate values, I errored on the side of the two systems beng converted <em>to</em>. Still, anomalies exist (e.g., dwarves are bit more mobile than normal).</p></blockquote><p></p>
[QUOTE="jdrakeh, post: 4241699, member: 13892"] This began as a [I]Fight On![/I] article submission, though due to some personal issues (including a recent job layoff) I'm not going to be able to finish it. . . so I'm posting the raw maths here. When dividing, round results up to the nearest whole number: [b]d20 HP to O/BD&D Health Dice[/b] d20 HP / 6 ≈ OD&D Hit Dice d20 HP / 8 ≈ HD&D hit Dice [b]d20 AC to O/BD&D Armor[/b] 19 - d20 AC ≡ OD&D Armor 19 - d20 AC ≡ BD&D Armor [b]d20 BAB to O/BD&D Weapon Damage Bonus[/b] d20 BAB / 2 ≡ OD&D Weapon Damage Bonus d20 BAB / 2 ≡ BD&D Weapon Damage Bonus [b]d20 Speed to O/BD&D Movement[/b] d20 Speed in 1" Squares x 2 ≈ OD&D Movement in Inches d20 Speed in Feet x 4 ≈ BD&D Movement in Feet [b]Special Attacks / Defenses[/b] Unfortunately, in D&D, these abilities always have been (and probably always will be) exception-based. Pick and choose special attacks, defenses, and non-combat abilities from the d20 list as you (the DM) deem interesting. --- You will note many approximations above. This is necessary given that raw values for certain things have changed wildly between editions of the game (movment rates for certain creatures being a key example). In calculating approximate values, I errored on the side of the two systems beng converted [i]to[/i]. Still, anomalies exist (e.g., dwarves are bit more mobile than normal). [/QUOTE]
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