Four of the Animorphs face off against three Hork-Bajir.
Gameplay in Know the Secret involves the player playing as each of the five Animorphs (before Ax) as they investigate why Yeerk operations have slowed down. In a mix of platforming, puzzles, and problem solving, the player can switch control between four of the Animorphs; Tobias is stuck as a hawk and gives clues to the player. While solving this mystery, the Animorphs have access to a number of different animal morphs they can change into, totaling 20. Using the different morphs and characters effectively is the key to beating the game.
In SuperKids's review of Know the Secret, they gave it a 2/5 for "educational value," a 4.5/5 for "kid appeal" and a 4/4 for ease of use.  Community reviews on GameSpot were much less positive. The average review was a mere 2.5/10.