Whether it’s with a knockout finish at an EVO fighting game championship, a crushing play in League of Legends, or a dorm-wide Super Smash Bros. tourney, eSports are taking the world by storm. Playboy’s eSports Highlights articles celebrate and chronicle their rise.

The Electronic Sports League (ESL) is looking to put a stop to the burgeoning practice of doping in eSports, starting with random drug tests for performance enhancers at tournaments.

The ESL issued a press release stating it ’s working with the Worldwide Anti Doping Agency and Germany’s Nationale Anti Doping Agentur to figure out how to best deal with performance-enhancing drugs in eSports. In the meantime, the league will be conducting skin tests at its upcoming ESL One Cologne tournament in August in Cologne, Germany.

The changes in policy seem a clear response to a video posted last week in which pro Counter-Strike player Kory “SEMPHIS” Friesen said he and his team, Cloud9, “were all on Adderall” at a competition earlier this year. The video suggests that doping is a pretty big problem in eSports, and rumors have been flying around about the issue as well. ESL has a policy against performance-enhancing drugs, but up to now hasn’t done much to enforce it.

We’ll have to wait until later this summer to see if the new policy is successful in stopping players from using Adderall to get a leg up in video game competitions. Shooting up characters with in-game stimpacks is still cool, though.