Shadowcopter - Realistic Helicopter Shadows and Visual Effects for Project Zomboid

Shadowcopter adds a small but atmospheric visual detail to Project Zomboid: the moving shadow of a helicopter flying overhead.

During the helicopter event, you may notice a large silhouette briefly sweeping across the ground. The effect makes the aircraft's presence more convincing without introducing new threats or changing how the event works.

The modification is purely cosmetic and follows the game's existing helicopter and sandbox settings.

How Helicopter Shadows Work

The shadow appears only when certain conditions are met:

• A helicopter is flying overhead and within hearing distance.
• Your character is outdoors.
• The event takes place during daylight.
• Weather conditions do not include a storm.

The aircraft's silhouette does not remain visible throughout the entire event.

Instead, you may see one or two brief passes, separated by a few seconds. Each lasts approximately 1.5 seconds.

This limited duration is intentional, creating the impression of an aircraft crossing the area rather than constantly hovering above the player.

Customize the Visual Effect

Several settings are available through:

Options > Mods > Shadowcopter

For size and speed, 100 represents the normal setting.

Lower size values produce a smaller silhouette, while higher speed values make it cross the ground faster.

The variation setting works differently:

• 100: Size and speed vary between passes.
• 0: Every pass uses the same values.

Does It Affect Zombie Behavior?

No.

Lowering the helicopter's audible volume does not make the event safer.

Zombies continue reacting according to the original game mechanics, even when the aircraft sounds quieter to the player.

The addon does not alter helicopter schedules, movement or spawning behavior.

Compatibility with Forevercopter

Shadowcopter follows the regular helicopter event settings.

For players using Forevercopter, which provides a more persistent helicopter experience, installing both is unnecessary.

If both addons are enabled, Shadowcopter automatically steps aside and Forevercopter's settings take priority.

Requirements and Save Compatibility

The effect runs entirely on the client and does not modify the game world or write additional information into save files.

Shadowcopter is a lightweight atmosphere enhancement for players who want the helicopter event to feel more present. A fleeting shadow across the street or an open field adds a visual reminder of the aircraft above, while the original survival mechanics remain intact.