KFC Japan launched a mobile game called "Shrimp Attack" to promote their new shrimp-themed menu items. The game allowed users to slash and swat away falling shrimp on their screens. The more shrimp players slashed, the more points and discount vouchers they earned, which could be redeemed at KFC stores. The gamification campaign was highly successful, leading to a 106% sales increase and many voucher redemptions. As a result, KFC had to cut the campaign short to stabilize their supply and demand.