Sweepstakes with purchase requirement: the Bioster case study with Weezio

Purchase-based sweepstakes: The Bioster case study

To boost consumer engagement and drive sales, Bioster implemented a digital activation based on a purchase-based sweepstakes accessible directly from product packaging via a QR code.

A simple, seamless, mobile-first mechanic that creates a direct link between the physical product and the digital experience at the point of purchase.

A web-based game accessible directly from product packaging

At the heart of this activation, a custom-developed web game allowed consumers to participate directly via a QR code integrated into Bioster product packaging. The user journey is immediate: after purchase, the consumer scans the QR code, accesses the digital experience, and uploads their proof of purchase directly from their smartphone.

No app to download, no complex entry forms. A mobile-first experience designed to maximize participation rates and minimize drop-offs during the process.

A proof-of-purchase sweepstakes mechanic to boost sales

To ensure qualified participation and encourage the purchase of Bioster products, the campaign relied on a purchase-based sweepstakes mechanicConsumers had to upload their receipt or proof of purchase directly to the platform to validate their entry into the online contest.

This strategy allowed the brand to generate engagement while rewarding the act of purchasing. Each entry serves as concrete proof of consumption—a highly effective lever for brands looking to link their promotional mechanics directly to their sales volume. To discover all our available mechanics, check out our catalog of 50+ marketing games.

End-to-end moderation management by Weezio

To ensure the reliability and compliance of the campaign, all moderation of proofs of purchase was handled by the Weezio team. Every entry was verified to guarantee the validity of the submitted receipts and ensure optimal management of the purchase-based contest.

Bioster was able to deploy its activation with complete peace of mind, without needing to mobilize its internal teams for operational tasks. This is one of the key benefits of our turnkey approach: the brand focuses on its communication, while Weezio handles execution from A to Z. To learn more about our support services, discover our SaaS marketing game platform.

A purchase-based contest designed to maximize engagement

This activation perfectly illustrates the effectiveness of purchase-based contests to drive interaction and boost in-store sales. By combining QR code packaging, a mobile-first experience, and centralized moderation, Bioster delivered a marketing game campaign that was high-performing, engaging, and perfectly tailored to modern digital consumer habits.

At Weezio, we help brands create marketing gamification strategies capable of turning every purchase into a true brand experience. Discover our promotional mechanics dedicated to brands and our page on collecting customer data through online contests.