Converting Adventures

Converting stats from other adventure games to the Drowned Isles is more of an art than a science. Nevertheless, here are some guidelines.

Saves

When players should make a save, map dexterity to Scramble, willpower to Command, and toughness to Muscle. More generally, go with whatever makes fictional sense.

Currency

Convert 1gp to 1 Siglos, or maybe divide by 10 if the numbers seem crazy.

B/X or otherwise “compatible” Stats

D&D-y, old school statblocks. Hypothetically will also work with a modern D&D derivative, but I’m not sure the numbers will feel right

Converting Health

• Convert any health to HD, rounding up (discarding it if there’s less than HD/2 health)
• If the creature has 2HD or fewer, give it 1 Injury slot and 1 Guard for each HD
• If it has 3 to 9 HD, give it 3 Guard and Injury slots equal to HD / 2 (round down)
• If it has 9 HD or more, give it 4 Guard and Injury slots equal to HD / 3 (round down; leftover HD go to Armor)
• Subtract 10 from ascending AC, divide by 10, and multiply it by HD (so 15 AC means HD * 0.5). Give the creature that much Armor, rounded naturally
• Feel free to move health between Armor and Guard. Generally one Armor is worth an amount of Guard equal to Wound slots (because they get refilled on a Wound), so converting one Armor to Guard makes a creature stronger and converting one Guard to Armor makes it weaker.

Fictional armor descriptions:

• Leather: 12 AC, 0.2 multiplier
• Chaimail: 14 AC, 0.4 multiplier
• Plate mail: 16 AC, 0.6 multiplier

Converting Damage

• Find the average damage of an attack (the average roll of a die is its “face value” / 2 + 0.5)
• Calculate Harm by dividing by 3 and rounding naturally
  • 1d4 and 1d6 are 1 Harm
  • 1d8, 1d10, and 1d12 are 2 Harm
• If you want to “zhuzh” up an attack or effect without increasing the Harm (which is not very granular), add an Effect

Mark of the Odd Stats

• Start with 1 Injury slot at 8 Strength and gain another for every 4 Strength. If Strength is less than 8, subtract 1 Guard.
• For every 2.5 HP they have, take 2 Guard (round naturally)
• Feel free to shift some Guard to into Injuries if the numbers are deeply unbalanced - though remember that each Injury is worth all of a character’s Guard.
• For every point of Armor they have, take 2 Armor.
• d4 attacks deal 1 Harm; d6 and d8 attacks deal 2 Harm; d10 and d12 attacks deal 3 Harm. For d8 and d12 attacks, consider adding an Effect.