The mechanism appears to be the same. The only difference I see is there's an extra piece that slides in to keep the puzzle from moving around when you're not playing with it [see here
]. According to this
, it was available in McDonalds Happy Meals in the following countries:
Only found one on eBay, but for way more than I care to pay for a Happy Meal toy. $17 w/ shipping is too high for me, but this post / puzzle inspired me to bite the bullet and buy the Spongebob puzzle. Got one for $5 w/ free shipping!