The FBI is looking for victims as it investigates several games with malware that were distributed through Steam. The agency said the suspected attacker targeted people who installed these infected games between May 2024 and January 2026.
FBI names seven Steam titles in malware investigation
In a notice published Friday, the FBI’s Seattle Division said it is trying to find people who installed Steam games “embedded with malware.” The agency listed seven games connected to the investigation: BlockBlasters, Chemia, Dashverse, DashFPS, Lampy, Lunara, PirateFi, and Tokenova. It asked affected users, or parents of minors, to share information through a federal form or by emailing investigators.
TechCrunch reported that the FBI is investigating a hacker suspected of publishing several video games laced with malware on the popular PC games store Steam, adding that the games were believed to have been developed by the same cybercriminal over the last two years. The outlet also said Valve and the FBI did not respond to requests for comment.
Probe points to a broader pattern on Steam
The investigation is not focused on just one game.
Tom’s Hardware reported that anyone who installed and played one of these games between 2024 and 2026 was likely affected. The outlet said victims who come forward will help the investigation and their information will be kept confidential. Tom’s Hardware described these games as ones that stole victim info and compromised their accounts.
The FBI form itself suggests investigators are mapping a wider chain of fraud, not just malicious downloads. The questionnaire asks victims whether they were contacted on platforms such as Discord, Telegram, Snapchat, or phone, whether money was lost through cryptocurrency or bank accounts, and whether other accounts such as Gmail, Coinbase, or Steam were compromised after the game was installed.
PirateFi and BlockBlasters highlight the risks
TechCrunch pointed out that malware has appeared on Valve’s marketplace before. In earlier cases, hackers published “functional” games on Steam as a “Trojan horse,” tricking players into installing malware before the games were removed.
Among the titles now linked to the FBI probe, PirateFi is one of the best-known examples because it had already drawn attention in earlier malware reporting.
PCMag said BlockBlasters is the most high-profile mention in the new list because the game allegedly exfiltrated $32,000 worth of cancer donations from a streamer last year. The same report said many of the games were crypto scams capable of draining wallets and hijacking accounts.
Steam users may face losses beyond the infected PC
The FBI’s victim form shows that investigators are looking into financial losses, account takeovers, and stolen digital assets, not just malware infections.
Users are asked if they lost money, had accounts compromised, or lost property like Steam inventory items. The agency said victims may qualify for certain services, restitution, and rights under federal and/or state law.
The case puts renewed pressure on platform screening for games that appear legitimate at first launch but later function as delivery systems for infostealers, wallet drainers, or account hijacking tools.
With the FBI now formally collecting victim reports, the Steam malware issue has moved beyond isolated takedowns into a federal cybercrime investigation.
