Dungeons & Dragons: How To Use Mob Combat

This guide simplifies large-scale combat in Dungeons & Dragons using mob combat rules. Managing individual rolls for numerous enemies slows down gameplay; mob combat streamlines this process.

Mob combat is ideal for any D&D encounter with significantly more enemies than player characters. It groups enemies into manageable mobs, reducing the need to track individual stats, rolls, and conditions. For instance, 30 goblins could become three 10-goblin mobs.

Benefits of Mob Combat:

• Faster Gameplay: Focus on mob groups instead of individual monsters, accelerating combat.
• Simplified Tracking: Easier management of enemy actions and status.

Running Mob Combat Effectively:

These tips ensure smooth mob combat for both Dungeon Masters (DMs) and players:

• Damage: Use average damage from the monster stat block.
• Hit Points: Significant damage to a mob member implies its removal.
• Mob Size: Five to
monsters per mob is recommended.
• Mob Number:
Don't exceed the number of player characters with mobs.

Determining Mob Success with d20 Rolls:

Instead of rolling for each monster, calculate the required roll for the mob:

Roll Needed = Target Number (e.g., AC) - Monster's Attack Bonus

For example, goblins with a 4 attack bonus targeting a creature with 18 AC need a 14 or higher. Use the table below (from the 2024 Dungeon Master's Guide) to determine the number of successful attacks based on the roll needed and mob size, accounting for advantage or disadvantage.Eight

Roll Needed			Number of Successes
Normal	Advantage	Disadvantage	Out of 4	Out of 5	Out of 6	Out of 8	Out of 10
1	1–4	1	4/4	5/5	6/6	8/8	10/10
2	5–6	—	4/4	5/5	6/6	8/8	10/10
3	7–8	2	4/4	5/5	5/6	7/8	9/10
4	9	—	3/4	4/5	5/6	7/8	9/10
5	10	3	3/4	4/5	5/6	6/8	8/10
6	11	—	3/4	4/5	5/6	6/8	8/10
7	12	4	3/4	4/5	4/6	6/8	7/10
8	13	5	3/4	3/5	4/6	5/8	7/10
9	14	—	2/4	3/5	4/6	5/8	6/10
10	—	6	2/4	3/5	3/6	4/8	6/10
11	15	7	2/4	3/5	3/6	4/8	5/10
12	16	—	2/4	2/5	3/6	4/8	5/10
13	—	8	2/4	2/5	2/6	3/8	4/10
14	17	9	1/4	2/5	2/6	3/8	4/10
15	18	10	1/4	2/5	2/6	2/8	3/10
16	—	11	1/4	1/5	2/6	2/8	3/10
17	19	12	1/4	1/5	1/6	2/8	2/10
18	—	13	1/4	1/5	1/6	1/8	2/10
19	20	14–15	0	1/5	1/6	1/8	1/10
20	—	16–17	0	0	0	0	1/10

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