Side note for this review..
The original Journeyman Project game came out in January 1993 (Source: http://presto.tommyyune.com/presto/titles.html ), while Myst came out in September 1993 (Source: http://en.wikipedia.org/wiki/Myst ).
So while both games share a lot of the same features and ideas of the time period, JMP isn't a Myst "clone", since they actually came first. ;)

I'd also disagree with the clone assessment on the grounds of content. What Myst and JMP / its ilk share is the FPP navigation; the puzzle-based gameplay that they employ is hardly novel, going back to text adventures of the way, way old days.
Myst (and later it's sequels) tried to cultivate a sort of "open world" style of adventure gaming. Whether it was successful or not - and I think you could easily argue that Myst was just as linear as JMP - the general feel of the environment is or was intended to be much less linear; the goals and objectives in Journeyman are much more overt, I think, and there's a certain narrative tension in the games (a greater sense of the consequences of failure) that I never really got from the Myst series, engrossing as they could be,

So while both games share a lot of the same features and ideas of the time period, JMP isn't a Myst "clone", since they actually came first. ;)
-macnbc
First thing that popped in my head when I saw this was to give the OP a nice chewing out and history lesson but it seems you beat me to it :D
Also by the way, your advice in my thread helped me complete the game yesterday. Years of agony now gleefully over! :D

To add to the history, if I recall correctly, JP was the First in many ways when it came out as well. Especially the combination of computer graphics and live action. Again, oooooold memories.