BERLIN | If you go down to the Rhine today, you’re in for a big surprise.

At least that’s what the Swiss city of Basel is claiming in a video featuring “Pokemon Go” characters taking humorous revenge on gamers.

In it, actors dressed as the Pikachu character throw giant balls at people with smartphones around the city. The mobile game, which has been hugely popular since being launched last month, normally involves players catching Pokemon by flicking the balls at them.

The clip has become a viral hit with more than 1.4 million shares on Facebook by Friday. It was made for Basel’s tourism office.

The city on the Rhine sits in the northwestern corner of Switzerland, on the border with France and Germany.