Variant Custom Fields Builder for Products
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Create dynamic custom fields for product variants. Add inputs, selects, uploads and conditional logic to personalize products and capture variant-specific data.
Brainst Mystery Box – Cart & Checkout Upsell
Increase your average order value with a configurable Mystery Box displayed in the cart and checkout. Customers can add one or multiple boxes with a single click.
Create Mystery Box Offers and Upsell at Cart & Checkout
Brainst Mystery Box adds a powerful yet unobtrusive upsell opportunity to your Shopware store. Display a configurable Mystery Box product directly in the cart and checkout pages, allowing customers to add one or more Mystery Boxes before completing their order.
The plugin is designed to increase average order value while maintaining a seamless shopping experience. Merchants can choose any existing Shopware product as the Mystery Box and control where it is displayed.
Customers can easily select a quantity and add the product to their cart without leaving the checkout flow.
Marketplace Pricing
Annually €1.25* /month €24.00 * €15.00* /year
Monthly €2.00* /month Cancelable monthly
Highlights
- Display Mystery Box in cart and checkout
- Increase average order value with upselling
- Allow customers to purchase multiple boxes
- Simple and clean storefront integration
- Fully configurable from plugin settings
Features
- Select any Shopware product as Mystery Box
- Display in cart page
- Display in checkout page
- AJAX add-to-cart functionality
- Quantity selector support
- Multiple quantity purchases
- Responsive storefront design
- Plugin configuration in administration
- Custom section title
- Custom section description
- Stock and availability validation
- Sales channel compatibility
- No core modifications required
- Shopware 6.5 compatible
- Easy installation and setup
Can I use any product as a Mystery Box?
Yes. Any active and purchasable Shopware product can be selected.
Can customers buy multiple Mystery Boxes?
Yes. Customers can add multiple quantities depending on stock availability.
Can I show the Mystery Box only in the cart or only in checkout?
Yes. Both display locations can be enabled or disabled independently.
1.0.0 (6.7.0.0 – 6.7.13.1)
1 September 2026
- Initial Plugin version
Install and activate the plugin. Navigate to Settings → Extensions → Brainst Mystery Box. Enable the plugin. Select the product that should be used as the Mystery Box. Enable display in cart and/or checkout. Configure title, description. Save the configuration. Clear cache and refresh the storefront.
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