Downloads & launcher trust
All official FoundryMTR files are distributed only from
files.foundrymtr.com and listed with size and SHA-256 checksum on the
downloads page. Verify what you download. Files obtained anywhere
else are not ours and may be unsafe.
The launcher is open-source (a HeliosLauncher fork) and currently unsigned — Windows SmartScreen may warn on first run. Checksums let you verify authenticity.