Unbreakable

About Cypherpunk, from BoardGameGeek:

A collaborative cryptographic board game where players use real-world ciphers to encrypt and decrypt coded messages before their identity and location are revealed. In a technocratic future, your identity is the most valuable resource. Set within a dystopian surveillance state, players must first resist and sabotage, then ultimately overcome, the secret sovereign financial power of the United Kingdom: The City of London. Use Playfair and Polyalphabetic shift ciphers to practice Agorism by smuggling contraband via black markets and dead drops. It's time to overthrow the surveillance state through encryption. It's time to become a Cypherpunk. -description from the publisher