This worked on my old PC but not on my new one with Windows 11, and unfortunately unlike JP1 and 2 this one is not supported by ScummVM. Looked like a few folks online were able to get it working with some fiddling but none of their solutions worked for me so I gave up. It's nice that JP3 is still available to legally purchase, but GOG should probably put a warning on their store listing. Buyer beware...
Possibly the best and funniest game I have ever played. Totally strange, hilarious, unique, addicting, and the greatest example of "video game as art" ever made. It is an absolute shame that this game wasn't very successful and the developers were devastated as it fell into obscurity. Do yourself a favor and buy this.
This is a fantastic game, assuming you are into this sort of thing, which is why I am giving it five stars. The only thing is that you can pretty much get it for free, with additional stuff, and with multiplayer (the way it was originally intended) by playing Myst Online: Uru Live. Look it up on google, register, and get this game for free.