Brain power is needed to protect your castle in this exciting game. ravel back in time to days of old when knights were bold, & castles dotted the l&. But can you build a castle that will be secure & strong enough to keep your blue knights safe from the invading enemy red knights? That's the challenge in Walls & Warriors, an engaging & intriguing single-player puzzle game. First, place your blue knights, the enemy red knights, & the blue-roofed tall twin-towered castle keep on the game board in the positions indicated on the Challenge card in the challenge booklet.