Vehicles

1. Summary

Three categories of vehicles are directly controllable by the player: Military Cargo Trucks, Military Trail Motorcycles and cars, such as Dr. Valério's automobile in Chapter Six. All functional player-accessible vehicles are finite.

2. Rules

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2.1 Drivable Vehicles

Other vehicles may appear throughout the world, including abandoned trucks, military jeeps, construction machinery, utility vehicles, and older transport equipment, but they are not necessarily drivable.

All functional player-accessible vehicles are finite. They do not respawn. Their condition is permanently recorded.

2.2 Military Cargo Truck

The military cargo truck is a heavy transport vehicle used by Brazilian troops for moving personnel, equipment, and supplies between surface installations.

The drivable trucks belong to the contemporary military presence and have received relatively recent use or maintenance. They are not necessarily vehicles abandoned since 1999.

The player may find a functional truck in a military garage, at a patrol station, or near an operational logistical facility.

The truck offers substantial protection compared with traveling on foot. Its enclosed cabin and heavy construction provide a degree of safety against environmental hazards, smaller creatures, and certain forms of attack. However, it is not armored against every threat and is not invulnerable.

It is also conspicuous. The engine generates considerable noise. Its headlights reveal its position at night. Its large size prevents it from entering narrow forest trails or traversing dense vegetation.

The vehicle also consumes significant amounts of fuel.

Attempts to cross unsuitable terrain may result in mechanical damage, loss of mobility, or permanent destruction.

2.3 Military Trail Motorcycle

The second controllable vehicle category consists of relatively modern military trail motorcycles used for reconnaissance and patrols.

These are contemporary service vehicles, not historical motorcycles abandoned during the original scientific period.

The motorcycles provide greater mobility than the cargo trucks. They can navigate narrow paths, patrol trails, and certain terrain unsuitable for larger vehicles. They also consume less fuel.

However, the motorcycle offers almost no physical protection. The rider is exposed to gunfire, hostile creatures, and environmental hazards. A collision, fall, or direct attack can have immediate consequences.

The motorcycle is particularly dangerous to operate at night through densely vegetated terrain. Its headlight illuminates only a limited area, while the rider must continually respond to uneven ground and unexpected obstacles.

The motorcycle is appropriate for rapid exploration and movement through narrow routes, but it provides much less security than the truck.

2.4 Cars

Dr. Valério's automobile is the established drivable car. It is the reward of the side quest The Unsent Letter and is particularly valuable if Edmund has lost access to the truck or other transportation. See: Campaign › 6. Gates Of Hell

2.5 Vehicle Availability

Vehicles are deliberately scarce.

Their possible distribution and exact quantities are still open. See: Canon › Open Questions.

2.6 The Truck in the Expedition

The major truck discovery is expected in Chapter Five, when Hamish calls Edmund's attention to a serviceable vehicle useful for the return to the surface auxiliary installations. See: Campaign › 5. Mystery Base

How that event introduces the truck, where it may be found and whether the player must use it are set out in that chapter.

The military patrols on the surface roads are described with the road network. See: Places › Military Road Network

Hamish may be able to have the truck recognized as an authorized equipment transfer only if the relevant contacts were established in Chapter Two. See: Systems › Strategic Preparation

2.7 Fuel for the Truck

A fuel reserve for the truck can be recovered on the surface. The optional quest that leads to it belongs to Chapter Four. See: Campaign › 4. Project Schwarzwald

The reward is a substantial finite reserve, not an infinite-fuel cheat. It reduces the burden of locating additional fuel during repeated surface journeys while preserving vehicle logistics as a meaningful gameplay constraint.

The reserve for the truck is separate from the large industrial diesel tanks associated with A2's elevator emergency generator in Chapter Five. Recovering fuel for the truck must not automatically restore the elevator or interfere with the power-generation system.

3. Player Feedback

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3.1 Psychological Role of the Truck

The truck is intended to create a specific emotional contradiction:

The player feels safer inside it, but the vehicle itself attracts danger.

Driving through the Amazon rainforest at night should feel atmospheric and unsettling. The player sees only the road illuminated by the headlights. Dense vegetation surrounds the vehicle. The diesel engine reverberates through the cabin. Rain may strike the windshield. Branches scrape the sides. Distant noises emerge from the forest.

Hostile creatures may detect the sound of the engine and investigate. The player might hear an unexpected impact against the metal bodywork without seeing what caused it. Occasionally, something may move through the headlights and disappear into the vegetation.

The protagonist may react with spontaneous dialogue:

"Oh God... What was that?"

"Oh God, help me..."

"Something's following us."

These moments should not always lead to scripted attacks. Sometimes the noises have environmental explanations. Sometimes a creature is genuinely nearby. The uncertainty is central to the intended atmosphere.

The player may turn off the engine and headlights to reduce attention, but doing so removes the comfort provided by movement and visibility.

Driving faster may help escape a dangerous area, but it also increases the risk of collision and vehicle damage.

The truck is therefore simultaneously transportation, shelter, a source of noise, and a valuable resource that must be protected.

3.2 Environmental Horror and Vehicle Atmosphere

The surface environment should rely heavily on atmosphere, sound, darkness, and uncertainty. The Amazon rainforest is particularly well suited to this approach.

At night, visibility can be severely restricted. The forest produces a continuous background of animal calls, insects, moving vegetation, rainfall, and distant unidentified sounds.

Traveling on foot offers discretion but little protection. Traveling by motorcycle provides speed but leaves the player exposed. Traveling by truck creates the sensation of occupying a comparatively secure metal enclosure. However, that enclosure may attract creatures through its engine noise and headlights.

The sound design should reinforce these differences.

3.2.1 Truck Atmosphere

Inside the truck, the player hears the diesel engine, vehicle vibrations, rattling components, tires moving through mud, rain against the windshield, and occasional impacts against the metal bodywork.

Visibility is limited to the headlights and the surrounding darkness.

A sudden impact against the side of the vehicle may cause the protagonist to react in fear. The player may not immediately know whether the impact came from vegetation, a falling object, a hostile creature, or something else.

The uncertainty should be maintained whenever possible.

3.2.2 Motorcycle Atmosphere

The motorcycle offers less separation from the environment. The rider hears the forest directly. Vegetation passes close to the vehicle. Unexpected obstacles are more dangerous. A pursuit may force the player to choose between speed and control.

3.2.3 On-Foot Atmosphere

Without a vehicle, the player is physically vulnerable but potentially harder to detect.

Moving quietly through the forest can allow hostile encounters to be avoided. However, the player must rely more heavily on observation, environmental awareness, and knowledge of the terrain.

The three transportation modes should create different emotional experiences within the same geographical space.

4. Interactions

• Checkpoint inspections while driving a military truck in disguise. See: Systems › Military Disguise
• Authorization of the truck's movement through Hamish's contacts. See: Systems › Strategic Preparation
• Vehicle condition and destruction as part of the persistent world. See: Systems › Persistent Consequences
• Military vehicles damaged during clashes between factions and creatures. See: Systems › Faction Conflicts

5. Persistence

Vehicles operate under a strict persistence system.

Their condition is recorded independently of conventional checkpoint restoration.

When a vehicle is damaged, its condition remains part of the persistent world state.

If a vehicle is irreversibly destroyed, that destruction cannot be undone simply by loading an earlier checkpoint or save.

This mechanic is communicated clearly to the player.

5.1 Vehicle Permanence

"Vehicles are limited. Their condition is permanently recorded. Destroyed vehicles cannot be restored by loading checkpoints or previous saves. Every vehicle lost is gone for good."

A damaged vehicle may still be repairable if suitable equipment and resources are available.

A destroyed vehicle is permanently unavailable.

Fuel consumption, mechanical condition, and other persistent attributes may also remain recorded.

This mechanic encourages players to evaluate when and how to use vehicles.

Driving recklessly through hostile territory can produce consequences extending far beyond a single encounter.

Losing a truck may force the player to cross significant distances on foot or rely on another remaining vehicle.

The game does not guarantee that the player will always have access to transportation.

All relevant locations remain reachable through non-vehicle traversal, although some routes may be more dangerous or time-consuming.

6. Design Principles

The intended design principle is that a functioning vehicle is a significant asset.

7. Open Questions

The open truck and fuel details, including the truck's exact location and acquisition conditions, are listed with the chapters. See: Campaign › 4. Project Schwarzwald and See: Campaign › 5. Mystery Base