Encounter Terrain Types and Environmental Effects

Twelve standard terrain types for personal-scale encounters, with cover density, movement modifier, visibility, hazards, and the LaGrange setting they live in.

Every personal-scale encounter happens in one of these terrain types (or a hybrid of two adjacent ones -- GM may apply BOTH cover densities and pick the harsher movement modifier). Each row gives the GM and the engine the Mechanical fingerprint needed to populate an encounter map without re-deriving rules.

Cover density maps directly to Cover and Concealment Bonuses: sparse = partial at 25% of firing positions, moderate = partial at 50%, dense = full cover or concealment at 50% of positions, no = line of sight clear.

Movement modifiers are expressed as a multiplier or flat penalty, not both. Use the higher (worse) value when two terrain types overlap.

Hazards here are persistent (fire, Vacuum, radiation) and affect everyone without a check -- listed separately from improvised hazards (a deck of cards on the floor, oil slicks) which the GM adds ad hoc.

Rows are anchored in LaGrange context: named factions (Confederation Core, Legion, Families, Day One, Ironball) and named biome archetypes (Rim frontier, Jungle river world, void ship interior). Each terrain is anchored in a distinct LaGrange institution, economy, or hazard ecology; Day One and Fold-echo sites remain exceptional.

Rules Reference

Field	Value
Data / T01 Core Plaza / Acoustics Note
Data / T01 Core Plaza / Acoustics Typed	loud
Data / T01 Core Plaza / Cover Density Typed	sparse
Data / T01 Core Plaza / Encounter Hook	Public brawl, interdiction of a runner, hush-handoff gone wrong, Family envoy under cover.
Data / T01 Core Plaza / La Grange Setting	Confederation Core -- upper-hive commerce level
Data / T01 Core Plaza / Move Cost Per Cell	1
Data / T01 Core Plaza / Move Mod Note
Data / T01 Core Plaza / Name	Core Hive Public Plaza
Data / T01 Core Plaza / Scale Fit Typed	personal
Data / T01 Core Plaza / Terrain Id	t01-core-plaza
Data / T01 Core Plaza / Visibility Note
Data / T01 Core Plaza / Visibility Typed	full
Data / T02 Core Maint Tunnel / Acoustics Note
Data / T02 Core Maint Tunnel / Acoustics Typed	normal
Data / T02 Core Maint Tunnel / Cover Density Typed	moderate
Data / T02 Core Maint Tunnel / Encounter Hook	Cultist ambush (Day One shrine in tunnel cul-de-sac), smuggling handoff, rat swarm feeding on a corpse.
Data / T02 Core Maint Tunnel / La Grange Setting	Confederation Core -- lower sub-hive utility zone
Data / T02 Core Maint Tunnel / Move Cost Per Cell	1
Data / T02 Core Maint Tunnel / Move Mod Note	5 ft squares, tight
Data / T02 Core Maint Tunnel / Name	Core Hive Maintenance Tunnel
Data / T02 Core Maint Tunnel / Scale Fit Typed	personal
Data / T02 Core Maint Tunnel / Terrain Id	t02-core-maint-tunnel
Data / T02 Core Maint Tunnel / Visibility Note
Data / T02 Core Maint Tunnel / Visibility Typed	limited
Data / T03 Core Residential / Acoustics Note	Quiet (during sleep cycle); Loud (during day cycle)
Data / T03 Core Residential / Acoustics Typed	quiet
Data / T03 Core Residential / Cover Density Typed	moderate
Data / T03 Core Residential / Encounter Hook	Family-syndicate hit, apartment raid, witness intimidation, child hostage (avoid).
Data / T03 Core Residential / La Grange Setting	Confederation Core -- mid-hive family unit
Data / T03 Core Residential / Move Cost Per Cell	1
Data / T03 Core Residential / Move Mod Note
Data / T03 Core Residential / Name	Core Hive Residential Block
Data / T03 Core Residential / Scale Fit Typed	personal
Data / T03 Core Residential / Terrain Id	t03-core-residential
Data / T03 Core Residential / Visibility Note
Data / T03 Core Residential / Visibility Typed	limited
Data / T04 Rim Badlands / Acoustics Note	Normal (calm); Loud (storm)
Data / T04 Rim Badlands / Acoustics Typed	loud
Data / T04 Rim Badlands / Cover Density Typed	sparse
Data / T04 Rim Badlands / Encounter Hook	Bandit interception, derelict crawler holdout, weird-west lone-rider duel, weather-stranding.
Data / T04 Rim Badlands / La Grange Setting	Rim frontier world -- wild dirt zone outside port
Data / T04 Rim Badlands / Move Cost Per Cell	1
Data / T04 Rim Badlands / Move Mod Note	open; vehicles x1 only on roads
Data / T04 Rim Badlands / Name	Rim Badlands Surface
Data / T04 Rim Badlands / Scale Fit Typed	both
Data / T04 Rim Badlands / Terrain Id	t04-rim-badlands
Data / T04 Rim Badlands / Visibility Note	Full (clear day); Limited (sandstorm)
Data / T04 Rim Badlands / Visibility Typed	full
Data / T05 Rim Derelict / Acoustics Note	Quiet (some sections); Normal (mechanical groans)
Data / T05 Rim Derelict / Acoustics Typed	quiet
Data / T05 Rim Derelict / Cover Density Typed	dense
Data / T05 Rim Derelict / Encounter Hook	Hulk crawl, scavengers vs boarders, lost stash, Fold-echo shrine (rare, scary).
Data / T05 Rim Derelict / La Grange Setting	Rim frontier -- beached hull hulk or ark-ship wreck
Data / T05 Rim Derelict / Move Cost Per Cell	2
Data / T05 Rim Derelict / Move Mod Note	zero-grav sections; x1/2 low-G crawls
Data / T05 Rim Derelict / Name	Rim Derelict Interior
Data / T05 Rim Derelict / Scale Fit Typed	personal
Data / T05 Rim Derelict / Terrain Id	t05-rim-derelict
Data / T05 Rim Derelict / Visibility Note	no power
Data / T05 Rim Derelict / Visibility Typed	none
Data / T06 Void Corridor / Acoustics Note	always -- hull resonance
Data / T06 Void Corridor / Acoustics Typed	loud
Data / T06 Void Corridor / Cover Density Typed	moderate
Data / T06 Void Corridor / Encounter Hook	Boarding action (see TBL-BOARDING-ACTIONS), mutiny aboard ship, intrusion by stowaway.
Data / T06 Void Corridor / La Grange Setting	Any void vessel (confederation patrol, Legion frigate, family yacht)
Data / T06 Void Corridor / Move Cost Per Cell	1
Data / T06 Void Corridor / Move Mod Note	5 ft wide; no side-step
Data / T06 Void Corridor / Name	Void Ship Interior Corridor
Data / T06 Void Corridor / Scale Fit Typed	personal
Data / T06 Void Corridor / Terrain Id	t06-void-corridor
Data / T06 Void Corridor / Visibility Note	Full (powered) / Limited (red alert)
Data / T06 Void Corridor / Visibility Typed	full
Data / T07 Void Cargo / Acoustics Note	reverberating
Data / T07 Void Cargo / Acoustics Typed	normal
Data / T07 Void Cargo / Cover Density Typed	moderate
Data / T07 Void Cargo / Encounter Hook	Smuggler ambush, pirate loot-dispute, container open onto stowed creature, tractor accident.
Data / T07 Void Cargo / La Grange Setting	Any large vessel -- holds, freighters, transports
Data / T07 Void Cargo / Move Cost Per Cell	1
Data / T07 Void Cargo / Move Mod Note
Data / T07 Void Cargo / Name	Void Ship Cargo Bay
Data / T07 Void Cargo / Scale Fit Typed	personal
Data / T07 Void Cargo / Terrain Id	t07-void-cargo
Data / T07 Void Cargo / Visibility Note
Data / T07 Void Cargo / Visibility Typed	limited
Data / T08 Void Engine / Acoustics Note
Data / T08 Void Engine / Acoustics Typed	loud
Data / T08 Void Engine / Cover Density Typed	dense
Data / T08 Void Engine / Encounter Hook	Sabotage run (TBL-BOARDING-ACTIONS step 8), emergency reactor containment, rogue engineer mutiny.
Data / T08 Void Engine / La Grange Setting	Capital-grade military or industrial ship
Data / T08 Void Engine / Move Cost Per Cell	2
Data / T08 Void Engine / Move Mod Note	machinery blocks
Data / T08 Void Engine / Name	Void Ship Engine Room / Reactor Hall
Data / T08 Void Engine / Scale Fit Typed	personal
Data / T08 Void Engine / Terrain Id	t08-void-engine
Data / T08 Void Engine / Visibility Note
Data / T08 Void Engine / Visibility Typed	limited
Data / T09 Jungle River / Acoustics Note	animal noise masks Stealth -2 at >30 ft
Data / T09 Jungle River / Acoustics Typed	normal
Data / T09 Jungle River / Cover Density Typed	dense
Data / T09 Jungle River / Encounter Hook	Patrol ambush, river-stalker hunt, Anvil-legion outpost raid, dawn-descent horror on the bank.
Data / T09 Jungle River / La Grange Setting	Ghala Bend river frontier -- cartel gunboat country beneath a predatory canopy
Data / T09 Jungle River / Move Cost Per Cell	2
Data / T09 Jungle River / Move Mod Note	terrain obstacles; boats x2 (current)
Data / T09 Jungle River / Name	Jungle River World Bank
Data / T09 Jungle River / Scale Fit Typed	both
Data / T09 Jungle River / Terrain Id	t09-jungle-river
Data / T09 Jungle River / Visibility Note
Data / T09 Jungle River / Visibility Typed	limited
Data / T10 Ironball Arena / Acoustics Note
Data / T10 Ironball Arena / Acoustics Typed	loud
Data / T10 Ironball Arena / Cover Density Typed	none
Data / T10 Ironball Arena / Encounter Hook	Gladiatorial bout, gang-vs-gang, crowd-rouser surprise, death-trap environmental shift (saw-floor rises).
Data / T10 Ironball Arena / La Grange Setting	Ironball -- the gladiatorial orbital stadium
Data / T10 Ironball Arena / Move Cost Per Cell	1
Data / T10 Ironball Arena / Move Mod Note
Data / T10 Ironball Arena / Name	Ironball Arena Floor
Data / T10 Ironball Arena / Scale Fit Typed	personal
Data / T10 Ironball Arena / Terrain Id	t10-ironball-arena
Data / T10 Ironball Arena / Visibility Note
Data / T10 Ironball Arena / Visibility Typed	full
Data / T11 Family Garden / Acoustics Note	artificial
Data / T11 Family Garden / Acoustics Typed	quiet
Data / T11 Family Garden / Cover Density Typed	moderate
Data / T11 Family Garden / Encounter Hook	Party-crash at a Family soiree, assassination attempt on an envoy, duel-of-honour, betrayal-in-a-bower.
Data / T11 Family Garden / La Grange Setting	Decadent -- Family private orbital estate or yacht park
Data / T11 Family Garden / Move Cost Per Cell	1
Data / T11 Family Garden / Move Mod Note
Data / T11 Family Garden / Name	Family Orbital Garden Atrium
Data / T11 Family Garden / Scale Fit Typed	personal
Data / T11 Family Garden / Terrain Id	t11-family-garden
Data / T11 Family Garden / Visibility Note
Data / T11 Family Garden / Visibility Typed	full
Data / T12 Day One Shrine / Acoustics Note	until the rite begins
Data / T12 Day One Shrine / Acoustics Typed	quiet
Data / T12 Day One Shrine / Cover Density Typed	moderate
Data / T12 Day One Shrine / Encounter Hook	Cult rite interrupted, desecration of a relic, psion-wars mid-argument, Day One rescue of a kidnapped convert (rare).
Data / T12 Day One Shrine / La Grange Setting	Day One enclave -- fold-tainted ritual space (used sparingly)
Data / T12 Day One Shrine / Move Cost Per Cell	1
Data / T12 Day One Shrine / Move Mod Note
Data / T12 Day One Shrine / Name	Day One Ritual Chamber
Data / T12 Day One Shrine / Scale Fit Typed	personal
Data / T12 Day One Shrine / Terrain Id	t12-day-one-shrine
Data / T12 Day One Shrine / Visibility Note	eternal twilight
Data / T12 Day One Shrine / Visibility Typed	none

Notes

Movement Modifier Resolution / Note: When two terrain types overlap on a single scene, pick the WORSE movement modifier and apply BOTH hazard lists (use the higher of two of the same damage type -- but additive where types differ).

Columns

terrainId

Field	Value
description	Unique key for the terrain entry.
label	Terrain ID
name	terrainId

name

Field	Value
description	Display name of the terrain type.
label	Terrain
name	name

laGrangeSetting

Field	Value
description	Which LaGrange biome / faction this terrain is anchored in.
label	Setting
name	laGrangeSetting

scaleFit

Field	Value
description	Personal / Vehicle / Both; combat scale this terrain is most often used at.
label	Scale Fit
name	scaleFit

coverDensity

Field	Value
description	None / Sparse / Moderate / Dense; maps to TBL-COVER-BONUSES.
label	Cover Density
name	coverDensity

movementMod

Field	Value
description	Multiplier or penalty to movement (in 5 ft squares).
label	Movement Mod
name	movementMod

visibility

Field	Value
description	Full / Limited (concealment 20%) / None (total concealment / darkvision needed).
label	Visibility
name	visibility

hazardsPresent

Field	Value
description	Persistent hazards: fire, vacuum, radiation, weather, fauna, structural.
label	Hazards
name	hazardsPresent

acoustics

Field	Value
description	Quiet (Stealth +5) / Normal / Loud (Stealth -5, Perception+2 to hear).
label	Acoustics
name	acoustics

encounterHook

Field	Value
description	What kind of scene this terrain typically hosts in LaGrange.
label	Encounter Hook
name	encounterHook

coverDensityTyped

Field	Value
description	Typed enum: none / sparse / moderate / dense.
label	Cover Density (Typed)
name	coverDensityTyped

visibilityTyped

Field	Value
description	Typed enum: full / limited / none.
label	Visibility (Typed)
name	visibilityTyped

visibilityNote

Field	Value
description	Conditional visibility qualifiers.
label	Visibility Conditions
name	visibilityNote

scaleFitTyped

Field	Value
description	Typed enum: personal / vehicle / both.
label	Scale Fit (Typed)
name	scaleFitTyped

acousticsTyped

Field	Value
description	Typed enum: quiet / normal / loud.
label	Acoustics (Typed)
name	acousticsTyped

acousticsNote

Field	Value
description	Conditional acoustics or qualifiers.
label	Acoustics Conditions
name	acousticsNote

moveCostPerCell

Field	Value
description	Per-cell movement cost: 1=x1 speed, 2=x1/2 speed, 4=x1/4 speed.
label	Move Cost Per Cell
name	moveCostPerCell

moveModNote

Field	Value
description	Conditional or additional movement constraints.
label	Movement Modifier Notes
name	moveModNote

hazards

Field	Value
description	Structured list of hazard objects.
label	Hazards (Typed)
name	hazards

Data / T01 Core Plaza / Hazards

Crowd traffic

Field	Value
effect	narrative:non-combatant collision
name	Crowd traffic
saveDC	0
saveKind	none
trigger	ambient

Drone surveillance

Field	Value
effect	rule:Security bots call Legion patrol
name	Drone surveillance
saveDC	0
saveKind	none
trigger	ambient

Data / T02 Core Maint Tunnel / Hazards

Live power conduits

Field	Value
effect	damage:1d6:electrical
name	Live power conduits
saveDC	0
saveKind	none
trigger	contact

toxic coolant drips

Field	Value
effect	narrative:toxic coolant drips
name	toxic coolant drips
saveDC	0
saveKind	none
trigger	ambient

rats

Field	Value
effect	narrative:disease check
name	rats
saveDC	0
saveKind	disease
trigger	ambient

Data / T03 Core Residential / Hazards

Door chimes

Field	Value
effect	narrative:stealth interrupted
name	Door chimes
saveDC	0
saveKind	none
trigger	ambient

thin walls

Field	Value
effect	rule:bullets pass through to adjacent units
name	thin walls
saveDC	0
saveKind	none
trigger	ambient

fire code violations

Field	Value
effect	narrative:fire code violations
name	fire code violations
saveDC	0
saveKind	none
trigger	ambient

Data / T04 Rim Badlands / Hazards

Sandstorms

Field	Value
effect	visibility:none
name	Sandstorms
note	1d4 hours
saveDC	0
saveKind	none
trigger	ambient

radiation pockets

Field	Value
effect	status:Sickened
name	radiation pockets
saveDC	12
saveKind	con
trigger	ambient

rust-cattle stampede

Field	Value
effect	narrative:rust-cattle stampede
name	rust-cattle stampede
saveDC	0
saveKind	none
trigger	ambient

Data / T05 Rim Derelict / Hazards

Vacuum pockets

Field	Value
effect	vacuum-exposure
name	Vacuum pockets
saveDC	15
saveKind	fort
trigger	enter

fold-bleed

Field	Value
effect	narrative:Day One sedition
name	fold-bleed
saveDC	0
saveKind	none
trigger	ambient

scavenger fauna

Field	Value
effect	narrative:scavenger fauna
name	scavenger fauna
saveDC	0
saveKind	none
trigger	ambient

structural collapse

Field	Value
effect	rule:structural collapse
name	structural collapse
saveDC	12
saveKind	reflex
trigger	ambient

Data / T06 Void Corridor / Hazards

Vacuum breach

Field	Value
effect	xref:TBL-VOID-SYSTEM-DAMAGE:6
name	Vacuum breach
saveDC	0
saveKind	none
trigger	ambient

fire suppression gas

Field	Value
effect	rule:suffocation
name	fire suppression gas
note	1d4 rounds
saveDC	13
saveKind	con
trigger	ambient

interior mag-locks

Field	Value
effect	narrative:interior mag-locks
name	interior mag-locks
saveDC	0
saveKind	none
trigger	ambient

Data / T07 Void Cargo / Hazards

Loose cargo in micro-grav

Field	Value
effect	damage:1d4:bludgeoning
name	Loose cargo in micro-grav
saveDC	0
saveKind	none
trigger	move-through

explosive containers

Field	Value
effect	narrative:explosive containers
name	explosive containers
saveDC	0
saveKind	none
trigger	ambient

unsecured cargo nets

Field	Value
effect	narrative:unsecured cargo nets
name	unsecured cargo nets
saveDC	0
saveKind	none
trigger	ambient

Data / T08 Void Engine / Hazards

Heat

Field	Value
effect	damage:1d6:fire
name	Heat
note	within 10 ft of reactor
saveDC	0
saveKind	none
trigger	per-round

radiation

Field	Value
effect	status:Sickened
name	radiation
saveDC	13
saveKind	con
trigger	hourly

electrical arcing

Field	Value
effect	damage:2d6:electrical
name	electrical arcing
saveDC	14
saveKind	reflex
trigger	ambient

Data / T09 Jungle River / Hazards

River-Stalkers

Field	Value
effect	narrative:predator
name	River-Stalkers
saveDC	0
saveKind	none
trigger	ambient

leeches

Field	Value
effect	rule:leeches
name	leeches
saveDC	12
saveKind	con
trigger	hourly

sudden fog

Field	Value
effect	visibility:limited
name	sudden fog
saveDC	0
saveKind	none
trigger	ambient

paramilitary patrols

Field	Value
effect	narrative:paramilitary patrols
name	paramilitary patrols
saveDC	0
saveKind	none
trigger	ambient

Data / T10 Ironball Arena / Hazards

Audience debris

Field	Value
effect	rule:rolled as ranged attack
name	Audience debris
saveDC	0
saveKind	none
trigger	ambient

arena traps

Field	Value
effect	narrative:GM call
name	arena traps
saveDC	0
saveKind	none
trigger	ambient

rival combatant

Field	Value
effect	narrative:rival combatant
name	rival combatant
saveDC	0
saveKind	none
trigger	ambient

blood-slip

Field	Value
effect	status:Prone
name	blood-slip
saveDC	10
saveKind	reflex
trigger	ambient

Data / T11 Family Garden / Hazards

Service robots

Field	Value
effect	narrative:non-hostile
name	Service robots
saveDC	0
saveKind	none
trigger	ambient

genetically modified fauna

Field	Value
effect	narrative:could be hostile
name	genetically modified fauna
saveDC	0
saveKind	none
trigger	ambient

Family pets

Field	Value
effect	rule:pet escalation
name	Family pets
saveDC	15
saveKind	cha
trigger	ambient

security-baton zephyrs

Field	Value
effect	narrative:security-baton zephyrs
name	security-baton zephyrs
saveDC	0
saveKind	none
trigger	ambient

Data / T12 Day One Shrine / Hazards

Fold-bleed

Field	Value
effect	status:Frightened
name	Fold-bleed
saveDC	15
saveKind	will
trigger	hourly

unstable gravity

Field	Value
effect	narrative:unstable gravity
name	unstable gravity
saveDC	0
saveKind	none
trigger	ambient

psionic echoes

Field	Value
effect	narrative:psionic echoes
name	psionic echoes
saveDC	0
saveKind	none
trigger	ambient

captive echoes of past celebrants

Field	Value
effect	narrative:captive echoes of past celebrants
name	captive echoes of past celebrants
saveDC	0
saveKind	none
trigger	ambient