<ul data-eligibleForWebStory="true">The Axe in Blue Prince nullifies Gem cost of selected rooms permanently.Best rooms to use Axe on include Trophy Room, Attic, Cloister, Rotunda, Vault.Attic offers valuable items, Cloister adds doorways, and Trophy Room boosts Gems.Using Axe strategically can enhance gameplay and optimize resources in Blue Prince.Consider using Axe on Classroom and Throne Room for specific challenges in-game.