Concealment in D&D 5e is a rule that makes it harder for creatures to see you, granting you advantage on Perception checks that rely on sight and giving attackers disadvantage on attack rolls against you. This evergreen explainer covers how concealment works, how it differs from cover and total cover, when it applies, and how to use it in encounter design and tactical play.
How Concealment Works
Concealment represents anything that obscures a creature’s outline but does not block line of effect or completely block vision. Typical sources include:
- Light obscuring mist or magical fog
- Heavily obscured areas, such as darkness without darkvision
- Environmental effects that make creatures harder to see without fully blocking sight
When a creature has concealment, other creatures have disadvantage on attack rolls against that creature, and the concealed creature has advantage on Perception checks that depend on sight. This represents the difficulty of reliably targeting something that blends into its surroundings or is partially hidden.
Concealment vs Cover vs Total Cover
It is important to distinguish concealment from cover. Cover involves physical barriers that grant bonuses to AC and Dexterity saving throws and can block line of effect, while concealment only affects perception and attack rolls. The table below summarizes key differences.
| Aspect | Concealment | Cover | Total Cover |
|---|---|---|---|
| Effect on Attack Rolls | Disadvantage | Bonus to AC | Cannot be targeted |
| Effect on Perception | Advantage (sight) | None by default | Cannot be seen |
| Line of Effect | Usually allowed | Usually allowed | Blocked |
| Typical Examples | Fog, dim light | Low walls, large creatures | Walls, corners, large objects |
Sources and Types of Concealment
Concealment can arise from game features, spells, and environmental conditions. Common sources include:
- Cloudkill
- Fog Cloud
- Obscuring Mist
- Heavily obscured areas in dim light or darkness for creatures without darkvision
DMs may also rule that partial concealment exists in light obscurity, granting neither full advantage nor disadvantage but reflecting reduced clarity. When in doubt, use the official guidance that concealment gives attackers disadvantage and Perception checks that rely on sight advantage.
Tactical Use in Combat
Concealment rewards positioning, line management, and awareness. It can make corridors with hanging banners, smoky rooms, or outdoor fog encounters more dynamic. For players, drawing concealment can help you approach enemies or set up ambushes. For monsters, DMs can use concealment to emphasize threatening environments or to challenge players who rely on sight-based tactics.
Action Economy and Perception
Advantage on Perception checks means concealed creatures are easier to notice once they act, while disadvantage on attacks can encourage players to move to better vantage points, use spells that grant Truesight, or rely on area effects that affect hiding creatures regardless of attack rolls.
Design and Encounter Building
Concealment is a powerful tool for encounter design. It can split the battlefield, create multiple front lines, or force players to use area control spells. When designing encounters, consider how concealment interacts with line of effect, range, and mobility. It should increase tactical depth without making targeted actions feel impossible.
Guidelines for DMs
- Apply concealment consistently with its definition: disadvantage on attacks, advantage on sight-based Perception.
- Use environmental storytelling to explain concealment (fog banks, dust storms, dim caverns).
- Balance concealment with other battlefield factors such as cover, mobility, and area control.
Common Misconceptions
Because concealment is often discussed alongside cover, some players conflate the two. Remember that concealment does not grant AC bonuses or block line of effect, while cover does. In addition, concealment is not the same as being hidden; a hidden creature is generally invisible to all creatures unless they have truesight or similar traits, whereas a concealed creature is merely harder to see or target accurately.