Mundane Realms

World Building & DM Tools

Active Module

Trap Generator

Mechanical Hazards & Puzzles

Generate modular mechanical hazards and puzzles for your dungeons and sandbox nodes. Dynamically scale save DCs and damage dice by party level and target difficulty.

Trap Categories

Include Gear-Destroying Traps (Acid/Fire)

Encounter Spawns

Monster encounters may occasionally trigger when generating traps for the following categories:Chests, Coffins, Doors, Gates, Altars, Statues, Passages, Rooms, and Wilderness.

Auto

Auto is based on a 4 player party

Auto

Auto generates a random party level (1-20)

Walking past an uneven vent
Passages • Hybrid Hazard

A tripped wire shatters a binding crystal, releasing 1x Ice Mephit.

Target Level:5
Party Size:4
Encounter:1x Ice Mephit
Reaching out onto the window sill
Windows • Mechanical Hazard

A tension loaded wire shifts the floor upward with crushing force.

Target Level:14
Save DC:15 Dex
Damage:10d10 Bludgeoning
Condition:Stunned (1 round)
Pulling the thick iron handle
Safes • Mechanical Hazard

A concealed needle mechanism strikes a resonant metal plate, creating a deafening shockwave.

Target Level:1
Save DC:12 Con
Damage:2d10 Thunder
Condition:Deafened (1 hour)
Forcing a crowbar under the lid
Chests • Hybrid Hazard

A hidden spring trap completes a copper circuit that shatters the silence with a concussive blast of sound.

Target Level:18
Save DC:16 Con
Damage:18d10 Thunder
Stepping on a concealed mossy rock
Wilderness • Mechanical Hazard

A pressure sensitive plate strikes a resonant metal plate, creating a deafening shockwave.

Target Level:8
Save DC:14 Con
Damage:4d10 Thunder
Condition:Deafened (1 hour)
Attempting to pry out a silver nail
Coffins • Magical Hazard

A hidden glyph pulses with raw arcane force and erupts into Hideous Laughter.

Target Level:5
Trap Save DC:13
Prying at the locked cabinet door
Desks • Magical Hazard

A cursed seal flash freezes the surrounding moisture.

Target Level:19
Save DC:16 Con
Damage:18d10 Cold
Condition:Speed Halved (Chilled) (1 hour)
Looking closely at the carved face
Statues • Mechanical Hazard

A rusted floor mechanism snaps a wire thin blade across the gap.

Target Level:12
Save DC:15 Dex
Damage:10d10 Slashing
Brushing dust off the doorknob
Doors • Magical Hazard

An invisible warding rune releases a localized wave of scorching heat.

Target Level:17
Save DC:16 Dex
Damage:18d10 Fire
Condition:Blinded (1 minute)
Stepping onto the raised altar dais
Altars • Magical Hazard

An ethereal tripwire snaps a chalkline of arcane dust that erupts into Heat Metal.

Target Level:4
Trap Save DC:13
Forcing a crowbar between the bars
Gates • Magical Hazard

The target object shimmers and shifts shape, revealing itself to be 1x Chimera!

Target Level:8
Party Size:4
Encounter:1x Chimera
Smashing the padlock with a hammer
Chests • Mechanical Hazard

A hidden trapdoor in the ceiling suddenly opens, dropping 1x Death Dog directly onto the party.

Target Level:15
Party Size:4
Encounter:1x Death Dog
Leaning against the stone balustrade
Stairs • Mechanical Hazard

A weighted pulley system shoots a cluster of barbed needles.

Target Level:10
Save DC:14 Dex
Damage:4d10 Piercing
Condition:Bleeding (Take 1d4 damage on movement) (Until healed)
Lifting the heavy iron latch
Doors • Mechanical Hazard

A pressure sensitive plate shoots a cluster of barbed needles.

Target Level:5
Save DC:13 Dex
Damage:4d10 Piercing
Inspecting the iron hinges
Chests • Magical Hazard

A faint, glowing mark summons a pool of bubbling, toxic sludge.

Target Level:6
Save DC:13 Dex
Damage:4d10 Acid
Condition:Poisoned (1 hour)
Touching the strange symbol on the cover
Books • Hybrid Hazard

A hidden glyph flares with blinding light, triggering a physical release that expels a fine, toxic powder into the air.

Target Level:17
Save DC:16 Con
Damage:18d10 Poison
Condition:Non-magical armor corrodes (-1 AC) (Permanent)
Tracing the carved holy symbol
Altars • Hybrid Hazard

A hidden reservoir spills glowing sap across a rune that unleashes Ray of Frost.

Target Level:17
Trap Save DC:16
Sliding the deadbolt
Doors • Hybrid Hazard

A hovering sphere of energy burns away into ash, dropping a counterweight that snaps a wire thin blade across the gap.

Target Level:14
Save DC:15 Dex
Damage:10d10 Slashing
Condition:Speed Halved (Wound) (1 hour)
Leaning on the carved marble effigy
Coffins • Mechanical Hazard

A tension loaded wire releases a swarm of venomous insects.

Target Level:13
Save DC:15 Con
Damage:10d10 Poison
Condition:Poisoned (1 hour)
Inspecting the carved wooden trim
Cabinets • Mechanical Hazard

A false bottom trigger swings a razor sharp pendulum.

Target Level:17
Save DC:16 Dex
Damage:18d10 Slashing
Condition:Bleeding (Take 1d4 damage on movement) (Until healed)
Pulling on a loose decorative knob
Stairs • Hybrid Hazard

A dormant magical trap pulses with raw force, snapping a holding pin that drops a massive stone block from the ceiling.

Target Level:7
Save DC:13 Dex
Damage:4d10 Bludgeoning
Condition:Prone (Until they stand)
Probing a small keyhole in the base
Pedestals • Mechanical Hazard

A rusted floor mechanism shatters a fragile glass vial, splashing corrosive acid.

Target Level:4
Save DC:13 Dex
Damage:2d10 Acid
Condition:Non-magical armor corrodes (-1 AC) (Permanent)
Stepping on the ornate center rug
Rooms • Mechanical Hazard

A tension loaded wire ignites a burst of alchemical fire.

Target Level:9
Save DC:14 Dex
Damage:4d10 Fire
Condition:Blinded (1 minute)
Opening the locked center drawer
Desks • Magical Hazard

A cursed seal flares with blinding light and manifests Flame Strike.

Target Level:11
Trap Save DC:14
Pressing the false bottom
Chests • Mechanical Hazard

A false floor collapses into a pit, revealing 1x Animated Armor.

Target Level:1
Party Size:4
Encounter:1x Animated Armor
Knocking on the thick timber
Doors • Magical Hazard

A glowing arcane sigil detonates, instantly plummeting the temperature.

Target Level:11
Save DC:14 Con
Damage:10d10 Cold
Condition:Speed Halved (Chilled) (1 hour)
Twisting the stone weapon
Statues • Hybrid Hazard

A dormant magical trap pulses with raw force, snapping a holding pin that releases a spinning fan of blades.

Target Level:9
Save DC:14 Dex
Damage:4d10 Slashing
Condition:Speed Halved (Wound) (1 hour)
Pulling the thick metal chain
Gates • Magical Hazard

A glowing arcane sigil releases a terrifying, hallucinatory shockwave.

Target Level:10
Save DC:14 Wis
Damage:4d10 Psychic
Condition:Targeted Disadvantage (1 hour)
Moving the heavy leather chair
Desks • Hybrid Hazard

A delicate glass vial switch spills glowing sap across a rune that disrupts cognitive thought with telepathic agony.

Target Level:9
Save DC:14 Wis
Damage:4d10 Psychic
Condition:+1 Level of Exhaustion (Until Long Rest)
Placing a matching item on top
Pedestals • Mechanical Hazard

A tension loaded wire expels a fine, toxic powder into the air.

Target Level:4
Save DC:13 Con
Damage:2d10 Poison
Condition:Non-magical armor corrodes (-1 AC) (Permanent)

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