; users have reported success by acknowledging the security prompt to proceed with the download. Legacy Forums : Some older files are still hosted on the "old" Marcel’s OMSI Forum (Omnibussimulator.de). Map Bundles

: Right-click OMSI 2 in your Steam Library , select Properties > Installed Files > Browse .

To prevent "missing spline" errors when loading maps like Mainz or Ahlheim, follow this structure:

If you're looking to download YUFA Splines for OMSI 2, here are some general steps you can take:

Since the original official links are often outdated or broken, the most reliable sources in 2026 are community-hosted mirrors: