Wow, this somewhat reminds me of a dungeon puzzle game and India Jones. This series is actually living up it it's name; puzzles. It's pretty much a unique anime and their settings and story is very interesting. I would pretty much say that it's a bit more then decent. The protagonist looks like a cool dude and looks similar to Yugi (Yu-Gi-Oh!) in a way. Other than those, that's what I can comment on and it's a must watch. We will have to hope that it doesn't end up as a cheesy anime. At first, I thought it was going to be lame but it didn't really turn out to be.
Conclusion: Unique puzzle anime series.