Designed for younger gamers than the better-known The Robot Odyssey, Gertrude's Secrets helps 4-7 years old toddlers develop basic shape and pattern recognition skill and fundamental logic via seven different puzzle rooms, each of which features a variation of the same theme. Array puzzles, for example, require the player to complete the sequence with appropriate shapes based on other sequences, while Train puzzles require that every pair of connected boxes contain pieces with different shape or color. Contrary to what one expects, the game's limitation of only a few colors and shapes does not make the game repetitive because each puzzle is different enough from one another, and some of them can be quite challenging. Solving each room (which has several puzzles of the same type) yields a treasure to be collected in the Treasure Room.

In addition to fun gameplay, the game also includes an outstanding tutorial and "Storeroom" feature where players can pick up new sets of pieces to use in puzzles, and even edit old ones if they become too familiar. The interface, as in The Robot Odyssey is as intuitive as it gets: everything is done by pressing the SPACE BAR key. In short, Gertrude's Secrets is a great game that even decades later is still better than many CD-ROM edutainment titles today. Highly recommended for 4-7 years old!