Ravenloft for Horrified: Dungeons & Dragons.

You can play Ravenloft for Horrified: Dungeons & Dragons if you have the base game by printing all this stuff out:

New monsters

New Map Board

Wandering Monsters app for Horrified D&D

Dungeons & Dragons: Castle Ravenloft Board Game has suitable miniatures.

Wandering monsters has a combat system like this, but you can use the app above:

Horrified: Dungeons & Dragons Combat

Compact Player-Facing Rules

1. Choose the hero involved in the combat.
2. Roll 1d6 on the Monster Table.
3. Hero and monster each roll 1d20 + 2 for initiative.
4. Highest initiative acts first. The hero wins ties.
5. On the hero’s turn, choose one:
   • Attack
   • Use Special Ability — once per combat
6. On the monster’s turn, the monster attacks.
7. To attack, roll:

1d20 + Attack Bonus

8. If the result is equal to or greater than the target’s AC, the attack hits.
9. On a hit, roll the attacker’s damage and subtract it from the target’s HP.
10. A natural 20 is a critical hit:

• Double the number of damage dice.
• Add the damage modifier only once.

11. If the monster reaches 0 HP, the monster is defeated.
12. If the hero reaches 0 HP, the hero is defeated.

Combat Results

Result	Effect
Monster defeated	Grab an item from the bag
Hero defeated	Lose an item

These match the JS end conditions.

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Hero Table

Hero	HP	AC	Attack	Damage	Special Ability
Rogue	18	13	+4	1d8+3	Sneak Attack
Fighter	24	15	+5	1d8+1	Second Wind
Bard	20	12	+4	1d8+2	Vicious Mockery
Wizard	15	10	+4	1d12	Magic Missile
Cleric	22	15	+4	1d6+2	Healing Word

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Hero Special Abilities

Each hero may use their special ability once per combat.

Hero	Special Ability	Effect
Rogue	Sneak Attack	Deal 1d6 automatic damage
Fighter	Second Wind	Recover 6 HP
Bard	Vicious Mockery	Deal 1d4+2 automatic damage
Wizard	Magic Missile	Deal 3d2+3 automatic damage
Cleric	Healing Word	Recover 5 HP

For Fighter and Cleric healing, the JS version allows HP to rise above starting HP. For a cleaner tabletop rule, cap healing at the hero’s starting HP. The special ability effects are taken from the implementation logic.

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Monster Table

Roll 1d6 when combat starts.

d6	Monster	HP	AC	Attack	Damage
1	Goblin	15	12	+4	1d8+2
2	Kobold	12	14	+5	2d4+2
3	Bandit	13	12	+4	1d8+4
4	Skeleton	15	11	+4	1d6+2
5	Wolf	16	15	+4	2d4+2
6	Cultist	11	12	+3	1d8+1

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Attack Reference

Roll	Result
Natural 20	Critical hit
1d20 + Attack ≥ target AC	Hit
1d20 + Attack < target AC	Miss

Critical Damage Examples

Normal Damage	Critical Damage
1d8+3	2d8+3
1d8+1	2d8+1
1d12	2d12
2d4+2	4d4+2
1d6+2	2d6+2

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Turn Example

The Fighter fights a Goblin.

1. Fighter rolls initiative: 1d20+2.
2. Goblin rolls initiative: 1d20+2.
3. Fighter wins and attacks.
4. Fighter rolls 1d20+5 against Goblin AC 12.
5. If the attack hits, Fighter deals 1d8+1 damage.
6. Goblin then attacks with 1d20+4 against Fighter AC 15.
7. Continue alternating turns until one side reaches 0 HP.