BlockBlasters Pulled From Steam After Alleged Malware Reports

Allegedly added a crypto-stealing payload; reports put losses above $150,000

BlockBlasters, a free 2D platformer briefly listed on Steam in August–September 2025, has been removed after security researchers and community reports linked a recent patch to credential theft and drained crypto wallets. One high-profile victim, Twitch streamer Raivo “RastalandTV” Plavnieks, says roughly $32,000 raised for cancer treatment vanished shortly after installing the game.

What happened

Multiple investigators indicate a malicious update was pushed on August 30 that began harvesting browser cookies, login tokens, and wallet data while the game was running. Community warnings spread quickly; SteamDB flagged the app as suspicious, and the store page was subsequently taken down. Valve has not issued a public statement at the time of writing.

Source post

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twitter.com/SteamDB/status/1970113742349140093

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Key dates (2025)

• Aug 30: Malicious update reportedly goes live.
• Sept 21: Store page is removed from Steam.
• Sept 23–24: Public reports consolidate; estimated total losses exceed $150,000.

If you installed BlockBlasters, do this now

1. Uninstall the game and delete its local files. Empty the Recycle Bin.
2. Run a full system scan with a reputable antivirus/EDR tool and update definitions first.
3. Log out of all browsers on the affected PC. Clear cookies and active sessions.
4. Change passwords on email, Steam, and exchanges; enable 2FA everywhere (prefer app-based or hardware keys).
5. Revoke API keys/sessions on crypto services and move funds to fresh wallets whose seeds were never exposed on the affected machine.
6. Monitor accounts for unusual activity and consider filing a report with local cybercrime authorities.

We’ll update this post if Valve or investigators publish new, verifiable details.

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