Bitcoin Legends
v1Halving cycle every 21 plies. Proof-of-Work on every capture.
- movementHalving Cycle — Every 21 plies, a halving block fires across the broadcast.
- captureProof of Work — Each capture triggers a hash-strike sting.
Opt-in game modes
Fantasy Modes
The default chess.tattoo board is pure chess — no chips, no overlays. Fantasy rulesets live here. Pick a universe, launch a game, and the picker travels with you through invite + spectate links. Returning to the regular board clears the mode automatically.
Cyberpunk
v1Knight Net Runs spike the grid. Captures shatter ICE.
- movementNet Run — Knight moves leave a data-spike glitch trail.
- captureIce Breaker — Every capture shatters neon ICE on the target square.
Game of Thrones
v1First check wins the Iron Throne. No second chances.
- movementDragonfire — Long-range moves (≥4 squares) leave a dragonfire trail.
- captureTrial by Combat — Every capture stages a duel sting.
- winIron Throne — First check wins instantly — there is no escape.
Star Wars
v1Lightsaber trails on long diagonals; Force Push on captures.
- movementLightsaber Trails — Bishops + queens leave a saber trail on diagonal moves.
- captureForce Push — Non-pawn captures trigger a Force Push shockwave.