I grabbed this during the Steam sale and finished it over the course of a couple days. Liked it quite a bit, although, as others have said, the puzzles aren't that tricky other than deciphering the wording sometimes. Ultimately, the puzzles aren't what makes Layton good though, so it didn't bother me. And the game succeeds quite handily in the same ways that Layton succeeds: Artstyle, Music, Characters, Atmosphere. This game reminded me a lot of Twin Peaks, which is a very good thing. I assume that most of the people who are enjoying the game are Lynch fans, and Duckroll probably isn't. As far as plot points left hanging, questions left unanswered, and the abrupt ending, it didn't really bother me because I like little mysteries in my fiction and I am cautiously optimistic that there will be further episodes. Here's the short recommend (more of a review) that I threw up on Steam:
"Think Professor Layton meets Twin Peaks. You play Nelson Tethers, FBI Agent, who is dispatched to a small town to investigate a disturbance in their eraser factory. This game lifts Layton's point & click adventure with non-sequitur puzzles almost entirely, right down to a town full of puzzle obsessed residents. Even for those who like Layton (like me), nobody gets that excited to solve a sliding block puzzle, so don't get too excited about the gameplay. Where the game shines, much like Layton, is in its presentation. Puzzle Agent has a beautiful pastel artstyle, a haunting soundtrack, and a bizarre story that is very reminiscent of Twin Peaks. Like all good point & click adventure games, Puzzle Agent sets you in a story with interesting characters you want to talk to, and locales you want to explore. Any David Lynch fan will appreciate the way it blends comedy of the absurd with dark and disturbing themes. The game is short (4 hours), but certainly worth $5 for adventure fans."
Also: Those gnomes really creeped me the fuck out.