This Trolli flavor is an exclusive to Walmart. It’s a cherry lemon flavor.

Inspired by the iconic Trolli Sour Brite Crawlers gummi candy, this limited-time Mountain Dew flavor delivers a fizzy sweet-and-sour combination with zero sugar.
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I don’t remember seeing a new flavor that only came in the zero sugar variety. It’s an interesting choice for one based on a very sugary candy!

This is one of the worst flavors I’ve tried in a long time. It has a really bad fake aftertaste, since they had to add something with it not having any sugar and only 15 calories. Giving it 2/10 might even be too high.