Professor Layton and The Diabolical Box is the second game in the series on the Nintendo DS, released in 2009. However, chronologically, it is actually the fifth game.

This is a mystery game with various puzzles for you to solve. It follows Professor Hershel Layton and his apprentice, Luke Triton, as they travel by train to seek out a box that supposedly kills anyone who opens it. On the way, an incident occurs and they happen upon an odd city that is plunged into darkness and never sees the light of day.

This is one of my favourite games in the series. I really enjoyed the mysterious train ride, and town in this game was so atmospheric and mysterious. The fact that it was always twilight seemed so unique and interesting, and the different characters all seemed to know something, but you don't know what. The gameplay was slightly improved from The Curious Village as well.

If you liked The Curious Village, it's a pretty safe bet that you'll like this. If you enjoy puzzle games, you may as well give this series a shot! Don't be put off by the cover -- it's most definitely not just for kids.