Nearly one year later, in October 2011, KFC Philippines replaced it with the Zinger Double Down, with a spicy flavor and crunchy skin.

In January 2016, another new variation was introduced, the Double Down G which contained "crispy fried spinach" with a "secret green sauce".

On August 27, 2021, both the Original and Zinger Double Downs were brought back again to the menu, but were discontinued at the end of October.

[7] The most recent release there of the Double Down was the Hawaiian version, with a pineapple slice and BBQ sauce included.

[10][better source needed] In India in October 2017, it was a secret item for the first week, available for purchase to a certain number of invitees and their friends as part of a promotion.

The German version contains two chicken strips, bacon, Monterey Jack and the special Double Down Sauce by KFC.

The Double Down was released in the UK and Ireland on 9[citation needed] October 2017,[14]following a launch a few days before, remaining available for six weeks until November 19.

[15] On October 18, 2010, KFC restaurants in Canada began selling the fried version of the Double Down for a limited time.

This version of the Double Down featured a Belgian waffle between two seasoned chicken fillets and used maple-flavored aioli.

[22] The KFC Double Down was initially test marketed in Omaha, Nebraska, and Providence, Rhode Island.

The chain cited its popularity in overall sales, as well as videos of people eating the Double Down becoming a YouTube sensation.

[31][32] KFC Australia announced via their Facebook page that if they reached 500,000 likes, they would bring the Double back to Australian stores for a limited time period of two days.

[33] The Double Down was also brought back for one day only on March 31, 2012, exclusively in Dunedin to raise funds for the Otago Rugby Union which faced financial difficulties in early 2012.

The product was released through a "secret menu" on KFC's mobile delivery app and instructions on how to purchase it were later publicly unveiled through a grassroots advertising campaign on TikTok.

Both the grilled and fried Double Down products have nearly a full day's worth of sodium according to the American Heart Association's guidelines.

[47] Despite sales in excess of one million units, KFC Canada discontinued the Double Down in 2010, reviving it again for a short period in 2011.

[49] Grant Ellis, CFO of New Zealand KFC operator Restaurant Brands, said that despite these sales the Double Down "did cannibalise some of our better-margin products".