This disk image of BOUNTY BOB STRIKES BACK side 0 is a true representation of the original disk as issued by Big Five Software in 1984. This is an unaltered, unpatched image with a similar protection to what was called "SpiraTrack" on the Apple ][. Pete Rittwage from c64preservation.com writes: "The data on the first 14 tracks or so are written half on the regular track, and half on the next half-track, all aligned perfectly. The game loads by stepping out to track 1, beginning the load, then stepping a half track at a time all the way in until the game is loaded. If any deviation in time from where it expects the data to be and when is found, it fails." Because of precise timing required by this protection, this image (at the time of writing) only works with version 2.3.20 of VICE with enhanced G64 support written by The Software Preservation Society. This is an updated version with mastering information embedded into the G64 file. IMPORTANT: You must WRITE PROTECT the disk, otherwise the protection will fail!