You can view the source and build it yourself here if you're concerned: https://github.com/aburch/simutrans https://github.com/aburch/simutrans It appears to b

You can view the source and build it yourself here if you're concerned: https://github.com/aburch/simutrans https://github.com/aburch/simutrans It appears to be three niche AVs, two of which don't claim to explain what they found and the third which says that it's "W32.AIDetect.malware2" which appears to mean their AI model thinks it's malware. Personally I wouldn't read much into that. Plenty of mainstream AVs have false positives on even commercially released software or open source built by trusted sources, and yet here they all agree it's safe.