The game revolves around solving a variety of intricate puzzles, from decoding ciphers to solving mechanical locks, all tied to the theme of seven keys. This aspect of the game provides a more intricate puzzle-solving experience compared to alternatives like Sherlock Holmes: Crimes & Punishments, which focuses more on investigative work than complex puzzle mechanics. Each puzzle in this game feels carefully crafted.

Nancy Drew: Mystery of the Seven Keys offers a richly detailed environment to explore, with every location carefully designed to evoke the atmosphere of a European town. Players will explore historic buildings, art galleries, and quaint local cafes while gathering clues to advance the investigation.

This level of detail sets it apart from other mystery games, such as The Room, which, while equally immersive, offers fewer expansive environments and exploration opportunities.

In Nancy Drew: Mystery of the Seven Keys, interacting with characters plays a key role in progressing the story. Conversations with the town’s residents help players piece together clues about the mystery, much like other detective games.

The game doesn’t come without downsides though. The frequent repetition of NPC models throughout the game detracted from the overall immersion, with identical characters appearing in close proximity to each other.

The shift from the traditional point-and-click mechanics to free-roam gameplay can be noted as a significant change. While the new format offered more exploration, it feels different from the classic Nancy Drew style.

Players can expect approximately 20 hours of gameplay, filled with numerous puzzles. Particularly challenging is an in-game logic puzzle with multiple possible solutions. Additionally, helpful hints for solving these puzzles are only accessible in Amateur mode or via a downloadable strategy guide.

Despite these challenges, the game also features several well-designed, medium-difficulty puzzles that are satisfying to solve.

Nancy Drew: Mystery of the Seven Keys successfully delivers a gripping mystery filled with challenging puzzles, detailed exploration, and engaging character interactions. For fans of the series or players seeking an immersive and thoughtful detective game, this title is a standout addition to the franchise​.