This is the famous 'FM Towns' version (named after the now defunct Japanese console).
You can buy it (as well as the EGA version) from GOG at a ridiculosuly cheap price! What are you waiting for?

Jen Sward was the producer/scripter/lead for the FM Towns conversion, and worked with David Fox at LAE (LucasFilm):

"Our Zak conversion was [one of ] the first CD game ever [edit: Jen got back to me on this- 'Manhole' came first, but Zak helped to pioneer the medium] I sure know we had a lot of trouble not only with the unique OS of the Townes (and lovely menu system!) but also with CD access, data streaming, storage, etc.  We've come a long way, and it's great to look back and see that some games and gameplay still shine. I had no idea of the fan games, these look amazing."

- Jen Sward (who now teaches production and design, and most students have never heard of Zak...)

 

The original FMTowns code contained two sets of sprites. Can you spot the difference? Can you say 'Anime'? :)

The CD box cover

The Japanese game came with cards showing each of the principal characters. I love it!

Below: the famous National Inquisitor newspaper - Japanese edition.

Most of these images are from the excellent fan site KTJ Dragon
I emailed to ask permission to use them, but got no reply.
As this is an archive of 'hard to find' stuff, and KTJ's stuff
is very good and very hard to find, I couldn't bear to leave it.
I hope he doesn't mind..

The FM Towns menu screen:

And here is the CD. Remember that this was early 1989, when almost all games came on a floppy disk.

In case you were interested, this is the FM Towns console. The big box is the original 1989 console, based on the IBM PC but with much better multimedia. It could be made to run Windows, but was in many ways superior. The other one was the 'Marty' console, released in 1991, that plays FM Towns games. Both are by Fujitsu. Click on an image for more details.