Now with 68k compatibility! It has been tested (on emulators) going back to System 4.0. System 3.0 does not seem to have any way of getting any information about the system (to the point where we can't even show a graceful error, it'll just crash).
They are not fat binaries, you have to download the correct one depending on your class of CPU.
The .bin files require Stuffit! Expander. If you don't have that, you can write the .dsk files to a floppy disk.