We developed the 'Holiday Savings Cart' game for Amazon on TikTok in partnership with Subvrsive. This interactive game was designed to elevate brand engagement during the peak shopping season. Integrating a Branded Effect with a Hashtag Challenge, users were encouraged to share their high scores for a chance to win a $100 Amazon gift card. The initiative was a resounding success, with the #AmazonSavingSpree hashtag achieving an astounding 10.7 billion views on TikTok.