As a proud American, I'm a fan of nearly all incarnations of Mountain Dew. From my very first organ-inflaming sip of Code Red, to the last slurp of backwash in Black Out, I love the hell out of Mountain Dew flavors, with rare exception. White Out was crap, that berry-ginseng one was stupid, and Pitch Black II: The Souring was dreadful.
Since moving to England two years ago, I've missed Mountain Dew--there are weird claims about it being 'banned' in the UK, some people claim it is because of HFCS, some people claim it is a dye, some people say it is Mtn Dew versus Mountain Dew-- whatever they say, they're wrong. You CAN get US-imported Mountain Dew in the UK, it is just really hard to find--I'm not talking about Throwback, either. My local grocery store sells Mtn Dew-labelled Code Red cans on the regular.
Anyway, 'Mountain Dew Energy' is the UK version of Mountain Dew, and it is pretty easy to find. I think it passes as say, a Sam's Club version of Mountain Dew. If you gave it to a kid they would know something was up, like dad lost his job, but they'd drink it anyway.
Britvic has released a new flavor of Mountain Dew Energy-- Game Fuel. Game Fuel was long ago released in the USA as a 'citrus cherry' flavor, while here it is described as a 'wicked mix of citrus and raspberry' flavor because English people hate cherries almost as much as they hate grapes.
Full disclosure, I don't remember US Game Fuel that well.
UK Game Fuel tastes a bit like boiled sweets or a raspberry Otter Pop, and is sufficiently syrupy. One of my main problems with Mountain Dew Energy is that it seems excessively carbonated, but this flavor is definitely more pleasantly flat. It really does taste a lot like one of the dozens of Mountain Dew varieties in the USA, and for that it deserves a pat on the back.