Johnny Castaway
Johnny Castaway came on a 3½-inch floppy disk and required a computer with, at minimum, a 386SX CPU and Windows 3.1. Now it is widely available on the internet, but because it requires 16-bit software components that do not work in modern versions of Windows, it only works on older versions of Microsoft Windows without workarounds, which exist on Windows 64-bit, Mac OS X and Linux.