I'm not reading any other posts because I'm still playing it and I don't want to run into spoilers, so this may have been mentioned before. I'm really enjoying the story so far, but the Coin Box-puzzle seemed a bit unfair to me. I know this game is made by Americans and that the game takes place in America, but not all non-Americans know the value of the various American coins just by their size. I suspect you guys couldn't do the same for Euro-coins. It's almost (but not quite) like the Monkey Island 2 monkey wrench-thing. (I was also stumped by the digits in space-puzzle, and after using up all my hints and getting the wrong answer 5 times in a row I decided to just google the numbers. I never would have guessed that in a million years, but at least the solution doesn't require the player to be American to get the right answer).
Still a great game, just a minor complaint. Really looking forward to playing it more after work! Favorite thing so far: the extra stamps after completing a puzzle. I like the sound those things make. All the other puzzles have been enjoyable for me so far too.