What's the difference in 'atlantis sky patrol JC' by encore and 'atlantis sky patrol' by bigfishgames

Question

Does anyone know
What is the difference in 'atlantis sky patrol JC' by encore (apx $10.00) and 'atlantis sky patrol' by bigfishgames (apx $20.00)

www.nulime.com/Atlantis-Sky-Patrol-Jc-Computer-Games-Toys-p231483-c320.html

The one by encore inclludes the letters "JC". What does "JC" mean?
Are these the same games?

Here are 2 places where the one by encore with "JC" in the title is listed:
http://www.edbydesign.com/books/B000SQLXPC.html
and
http://www.amazon.com/Encore-14830-Atlantis-Sky-Patrol/dp/B000SQLXPC/ref=sr_1_1/102-0540208-3643329?ie=UTF8&s=videogames&qid=1189013113&sr=1-1
I asked amazon, they don't know anything - they just list whatever the vendor sends.

Answer 1

I don't know but lots of sites have the same games just with different purchase front-ends. For example, bigfishgames.com and gamesocks.com both have Atlantis Sky Patrol for like $19.95

I tried searching for 'atlantis sky patrol JC' but just got a lot of junk sites so I don't know if that's a stripped down version or whatever...