Halloween Event • Limited-time savings • While supplies last

Mostarle Halloween 2026

Build Something Wicked

Bring mechanical creatures to life and save more when you build your Halloween collection.

Offer ends in

00Days 00Hours 00Minutes 00Seconds

Ends October 31, 2026 at 11:59 PM PT.

Unlock your offer ↓

✓ Adjustable display wings
✓ Atmospheric bat projection
✓ Display upright or upside down

Halloween Pick

✦Free US shipping on $80+ USD

◈Tracked delivery

↗Parts support

Choose your spell

Build More. Save More.

Pick the offer that fits your build. Enter the code at checkout.

Spend $99 USD+

Save $10

HALLOWEEN10

Best value

Spend $149 USD+

Save $20

HALLOWEEN20

One discount code per order. Codes cannot be combined with other discounts. Shadow Bat is eligible. Discount applies to qualifying merchandise subtotal before shipping and taxes.

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$0Spend $99 USD+Spend $149 USD+

Meet the Shadow Bat

A mechanical Halloween centerpiece designed to build, pose and display.

Adjustable Acrylic Wings

Pose the translucent wings to create a dramatic mechanical silhouette.

Bat Shadow Projection

A built-in light casts an atmospheric bat shadow after dark.

Stand or Hang

Display your Shadow Bat standing tall or hanging upside down.

Halloween collection

Complete Your Collection

Add your favorites to reach the offer threshold and save at checkout.

Real Builds. Real Reactions.

Add only verified customer feedback and customer-approved photos.

Halloween limited offerShadow Bat · $49.99

Plan your order

Shipping, Without Surprises

Shadow Bat pre-order

Estimated shipping begins in late September 2026. Timing is an estimate, not a guaranteed delivery date.

In-stock models

The current delivery estimate is shown at checkout based on your destination.

Tracking updates

Tracking details are sent after your parcel has been dispatched.

Orders containing pre-order and in-stock items may ship together or separately depending on fulfillment.

Before You Summon Your Build

Quick answers about offers, pre-orders and delivery.

How do the Halloween discount codes work?

Use HALLOWEEN10 for $10 off a qualifying merchandise subtotal of $99 or more, or HALLOWEEN20 for $20 off $149 or more. Enter one code at checkout.

Can I combine both codes or use another discount?

No. Only one discount code can be used per order, and these Halloween codes cannot be combined with other discounts.

Does Shadow Bat count toward the discount threshold?

Yes. Shadow Bat is eligible and counts toward the qualifying merchandise subtotal.

When will my order ship?

In-stock items follow the estimate shown at checkout. Shadow Bat is a pre-order with estimated shipping beginning in late September 2026. Mixed carts may ship together or separately depending on fulfillment.

Where do I enter the discount code?

Enter the code in the discount field at checkout. If the cart meets the threshold and the code is active, the discount will appear before payment.

Halloween offer terms

Valid through October 31, 2026 at 11:59 PM PT. One code per order. Cannot be combined with other discounts. Offer applies to eligible merchandise subtotal before shipping and taxes. Gift cards are excluded. If a return causes the order subtotal to fall below the qualifying threshold, the discount may be adjusted accordingly.

Limited-time Halloween event

Ready to Build After Dark?

Choose your models, reach an offer threshold and apply your code at checkout.

Shop the collection

Build Something Wicked