This is an under-the-hood gem. Previous versions generated save states that ballooned to 120KB per file. v1.06 implements LZ4 compression, shrinking save states to ~28KB without performance loss. This allows unlimited save states without filling your Documents folder.
Consequently, v1.06 has become the "stable legend" – the version that collectors burn to archival Blu-rays and lock in safe deposit boxes. FC 6 Ultimate Edition v1.06