Here are both the wikis. First, the cigerettes:

Mevius previously called Mild Seven (Japanese: マイルドセブン Mairudo Sebun) is a brand of cigarettes produced by Japan Tobacco. Mevius cigarettes are the fifth widest smoked cigarette in the world with 76.5 billion around the world, behindMarlboro and Camel. Originally manufactured in Tokyo by Japan Tobacco Inc., as a variant of the popular Seven Stars brand, the Mevius under the Mild Seven name has been a top seller since its creation in 1977 and is the second largest cigarette brand in the world http://en.m.wikipedia.org/wiki/Mevius
And the game:

The concept behind Mevius was a mobile experience that was comparable with console games. The majority of its staff are veterans of the Final Fantasy series. The story is connected to the original Final Fantasy, though is not a remake and shares no direct connection. It is also considered by the team behind the game as a full entry in the series rather than a spin-off. The story's theme is "warriors of light" http://en.m.wikipedia.org/wiki/Mevius_Final_Fantasy
In regards to the game, there is a Mevius Final Fantasy Screenshots thread if you wanted to check them out.