Police were forced to break up a fight involving 30 people over augmented reality game Pokemon Go.
The brawl in Surrey is among a list of crimes involving the game revealed by Freedom of Information requests, with others including muggings and exposure.
The game quickly sparked a global phenomenon when it was released in June last year, breaking records as it was downloaded more than 10 million times in its first week.
It allows people to chase virtual Pokemon through the real world by superimposing them into real life through a mobile phone.
The list of crimes - including domestic fights in the West Midlands, exposure in West Yorkshire and a number of muggings, was revealed by the Liberal Democrats and reported in the Sun.
Former party leader Tim Farron told the paper: "Hearing serious crimes are committed using Pokemon is worrying, especially as a dad with kids who love the game.
"It clearly shows nothing is 100% safe."
AP