Equipment Modifiers

Equipment Modifiers (p. B101 or B345) can be applied to Equipment as either enhancements or limitations. These adjust the base cost and weight of items and allow you to add Features to equipment.

Master Library

GCS includes libraries of official Equipment modifiers in the Master Library that are taken from GURPS books and other supplements. See Library Explorer for more details.

You can also create your own custom Equipment modifiers.

Equipment Modifier list

The Equipment Modifier section in the Equipment Detail Editor includes the following columns. Select a column heading to sort ascending or descending .

Column	Description
	If checked, the modifier is enabled and its effects apply to the item.
Equipment Modifier	The modifier’s name and any notes. Select the notes icon to open or close the notes.
TL	The Tech Level.
Cost Adjustment	The calculated adjustment to the Equipment’s monetary cost.
Weight Adjustment	The calculated adjustment to the Equipment's weight.
Tags	Tags used to help organize modifiers.
	Page reference for the modifier. See Page References.
	Tracks whether the modifier matches the official Master Library. See Master Library Syncing in Character Sheet Overview.

Adding Equipment modifiers

You must add modifiers to existing Equipment.

To add a modifier:

1. Open the Equipment Detail Editor for the Equipment you want to modify.
2. Open a Modifier library from the Master Library.
3. Drag the modifier to the Equipment Modifier section in the editor (note: you must drag it to the precise location on the Detail Editor).

You can also create a new custom modifier:

• Open the Equipment Detail Editor for the Equipment you want to modify.
• Go to Item > New Equipment Modifier.

Managing modifiers

You can manage modifiers directly in the Equipment Detail Editor:

• Enable/disable: Check or uncheck the box to apply or remove a modifier’s effects.
• Delete: Right-click the modifier and select Delete (or select it and go to Edit > Delete).

Editing Equipment modifiers

You can edit an Equipment modifier in a few ways:

• Double-click it to open the Detail Editor for Equipment modifiers.
• Right-click it and select Open Detail Editor.
• Select an Equipment modifier and go to Edit > Open Detail Editor.

Save your changes when you're done from the Equipment modifier toolbar (see below).

Equipment Modifier Detail Editor fields

The Equipment Modifier Detail Editor includes the following fields:

Equipment Modifier field	Description
Name	The Equipment modifier's name.
Tech Level	The Tech Level.
Notes	Notes about what the Equipment modifier does. These appear below the Equipment on your character sheet. Supports Markdown.
Also show notes in weapon usage	If checked, notes also appear in the weapon usage section.
VTT Notes	Notes for use in your Virtual Tabletop system. See your VTT’s documentation.
Enabled	If checked, the modifier is active and applies its effects.
Cost Modifier	Adjusts the item’s monetary cost. See Cost and Weight Modifiers section below.
Weight Modifier	Adjusts the item’s weight. See Cost and Weight Modifiers section below.
Per Level	If checked, applies the cost/weight change for each level of the equipment.
Tags	Comma-separated Tags to help organize modifiers.
Page Reference	Page number for the modifier. See Page References for details.
Page Highlight	Text to highlight in the PDF. Leave blank unless the default highlights fail.
ID	The modifiers’s unique ID.
Source ID	The unique ID for the modifier in the source library.
Source Library	The name of the source library.
Source Path	The path to the source library.
Features	Lists attribute, conditions, skill, spell, reaction, or weapon changes applied by the modifier. See Features for more details.

Cost and Weight Modifiers

Unlike Trait Modifiers, equipment modifiers adjust an item’s money cost and weight instead of character points.

Each modifier has two parts:

1. A value (for example, +5, -10%, ×2, +1 CF).
2. A stage (selected from the dropdown).

Accepted formats

Both Cost and Weight modifiers accept multiple formats. You can enter whole numbers, decimals, or fractions:

• Flat changes: +5, -5 lb, -0.2
• Percentages: +10%, -20%
• Multipliers: ×2, ×3.2, ×2/3
• Cost Factor (CF): +2 CF, -0.2 CF (cost only, see below)

Cost Factor (CF) represents multiplicative adjustments to an item’s base price.

• A positive CF increases cost by adding multiples of the base price.
• A negative CF decreases cost by subtracting multiples of the base price.

For example, a $500 Broadsword with +2 CF (Fine quality) costs: $500 base + ($500 x 2 CF) = $1,500.

Cost Modifier stages

• To original cost: Adjusts the raw book cost.
• To base cost: Adjusts after TL/CF changes.
• To final base cost: Adjusts after other modifiers, but before the final calculation.
• To final cost: Adjusts the very end result.

Weight Modifier stages

• To original weight: Adjusts the listed book weight.
• To base weight: Adjusts after TL/CF changes.
• To final base weight: Adjusts after other modifiers, but before the final calculation.
• To final weight: Adjusts the very end result.

Tip

Multiple cost or weight modifiers can stack. Be careful which stage you apply them at — this changes the math significantly.

Equipment Modifier toolbar

The toolbar above the Equipment Modifier Editor gives you quick access to common actions:

Button	Name	Description
	Help	Opens the help page from the User Guide.
100%	Zoom	Adjusts the display size of the Equipment Modifier Editor.
	Apply Changes	Saves and closes the Equipment Modifier Editor.
	Discard Changes	Exits without saving changes.

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