BOOL Duel™

A two-player logic card game with perfect information — and relentless pressure.

Both players start with the same row of 0s and 1s and the same 8-bit target to hit. Each turn you place operator cards like AND, OR, XOR, COPY, or SWAP between opposing bits to change the 8-bit rows. Operators can stack and override each other, so the same bits can change quickly depending on what’s placed between them.

Flip the right bits at the right moments. The first player to match the 8-bit target wins.

Gallery

Production status (Feb 2026)

In development

Design: core ruleset is complete and stable; finalizing back-of-box information.
Playtesting: ongoing casual and demo play with new players.
Manufacturing: minimal; card and tuck box production validated.
Distribution: suitable for direct sale and small-batch runs.
Gaming App: Initial steps taken to create a free android and iphone app to promote game.
IP Registration: preparations being made for trademark registration with the USTO.

Specs

Current prototype

VERSION 2

Players 2

Format Card game

Information Perfect information

Mechanics Boolean operators, state transformation

Estimated Price $15-$20 Retail

Credits Andrew Moses, Garrett Bailey, Vaughn Johnson

Card Count 67

Rules and Instructions

Cards

Bit Cards: Red and black cards showing 0 on one side and 1 on the other.
Operator Cards: Red and black cards showing a logical operator and a truth table. The rightmost column shows the resulting bit after the operator is played.
Nibble Cards: 4-digit cards used to draw the target byte; digits are mirrored for the opposing player.

Setup

Two players: red and black, sitting opposite each other.
Both start with the same left-to-right 8-bit sequence (byte) in their own color with one card-length space between the bytes: [0 1 0 1 0 1 0 1].
1’s should oppose 0’s between players.
Shuffle the 16 nibble cards.
Draw 2 nibble cards, place them adjacent and face down, then flip them face up. The combined 8 digits form the target byte as seen left-to-right by each player.
Shuffle the operator card deck.

How to Play

Each player draws 2 operator cards from the shared deck and places them face up.
On your turn, play 1 operator card between a red bit and a black bit. Apply the effect according to the operator card’s color and truth table:
- A red operator affects the red bit.
- A black operator affects the black bit.
If the affected bit changes, flip that bit card.
On your next turn, play your remaining operator card before drawing 2 new operator cards.
Operator cards can stack between bits; newer cards override older ones in the same spot.

Win

The first player to exactly match the target byte with their bit cards wins.

Note

COPY cards copy the value of the opposing bit onto your bit. Operator placements that have no effect are allowed.