The Island of Dr. Brain – PC Big Box – 3.5″ Floppy Disks (1992, Sierra On-Line). The Island of Dr. Brain, presented in itsauthentic big-box 3.5″ floppy disk format. All original3.5″ floppy disks. Dr. Brain series, this title combines puzzle-solving with classic DOS-era presentation and remains a desirable release for Sierra and retro PC collectors.
eBay