LOS ANGELES, California — Union video game actors filed an unfair labor practice charge and declared a strike on Tuesday against the company Formosa Interactive, which provides voiceover services for the popular online game 'League of Legends,' (LOL) the actors' union said.

Screen Actors Guild-American Federation of Television and Radio Artists (SAG-Aftra) union members have stopped providing covered performance services to LOL and the massive multiplayer online battle arena game, developed by Riot Games in 2009, is now listed by the union as a struck game.