Umamusume: Pretty Derby warns fans to behave at real horse stables. No flash photography, no smoking—and definitely no idol-level fandom drama.

Developed by Cygames — the company behind the Granblue series, another massive franchise — Umamusume: Pretty Derby was officially released in Japan in 2021, but only just became available in the United States this year. Released June 26 for Windows PC, iOS, and Android, this gacha game has taken over social media and livestreams.

To put that number in perspective, that is just over double the number of concurrent players at launch. The game is now squarely in the top 50 most-played games on Steam, according to SteamDB. That puts it in competition with games like Elden Ring Nightreign and Warframe.