50 Clues: The Fate of Leopold

I found this to be the easiest of the 'Leopold' series. As the review's title indicates, this (and the other 50 Clues games we've played) have a dark side to them. Unfortunately, as with all games like this, you can only play it once, but since you don't destroy any components, you can pass it on to a friend when you're done.
The game is played with an online app that directs you based on the items you combine and puzzles you solve. It requires entering an activation code from the inside of the box top. The activation code can be used 30 times, which should be more enough for sharing amongst friends.
A good escape puzzle, but not great, and you can only play once.