Starting with Mission 5: "The Prince and the Outlaw" when Robin learns that Prince John is planning to crown himself king of England and began gathering the Crown Jewels, the player can try and steal all of them throughout the game, including:

• Royal Sceptre, Mission 5: "The Prince and the Outlaw"
• Doomsday Book, Mission 7: "The Evening Visitor"
• Coronation Spoon, Mission 9: "The Lock Up and the Friar"
• Sword of State, Mission 10: "The Silver Arrow"
• Ampulla, Mission 12: "A Wedding and a Funeral"
• Richard's Sigil, Mission 13: "The Escape"
• Royal Crown, Mission 14: "The Letter"

The Silver Arrow itself, also found in Mission 10, despite not counting as one of the Crown Jewels, is displayed alongside the rest of them.

Gathering all of the Crown Jewels increases the final score, but after completing the final mission, it will also unlock a secret ending. Following the last cutscene, a new segment will load showing the main characters, some civilians and soldiers at the Sherwood Forest hideout throwing a techno dance party complete with modern electronic music (in contrast to the orchestral medieval soundtrack throughout the rest of the game), turntables and loudspeakers. The player is only able to control Stuteley, but he will return to his starting position after every attempt to move.