I beated the first two worlds when I got the game, the gameplay part has turn much more fun than in the older games, the missions have a lot more variety and the game is more like a textless adventure game that what Scribblenauts and Super Scribblenauts offered.
Im european and got a key for the game (as Ive worked as an artist on it, we did hundreads of easter eggs, some are really difficult to discover lol) and I can say that its not blocked by country like other steam games. So you can get the american version and use it in a european account without a problem.
Just a heed of warning, the game is translated apart from english to other laguages like spanish and french.
I dont know the french version, but the spanish translation is south american spanish and not castillian spanish, so lots of words are completly different in the dictionary, what will make rather difficult to anyone spain to resolve some puzzles or try to summon some of the objects and characters.
I suppose the french version is canadian french, so i dont know how similar is to french in france for it to be a problem.
Im playing it right now in english, and will get the wiiU version to play it in spanish.
i hoped that moving from portables to home consoles and pc the game would have got some enhancements in physics and some deeper mechanics..instead it seems the same game with the possibility to edit objects...
Lots of objects were reworked to do what they do in real life and physics are enhanced.
The game objects and characters work MUCH better than in the handheld versions.