♠♥♦♣
SUPERJACK
A war game hiding inside a deck of cards
A standard deck · an unfair amount of strategy
No install. No shuffle-screen ads. Just the table.
A war game hiding inside a deck of cards
A standard deck · an unfair amount of strategy
No install. No shuffle-screen ads. Just the table.
The sizzle
Real footage from the current build — the war, the legend, the Reckoning. No mockups, no renders of things that don't exist.
live gameplay at 2× speed · the four-jack legend · the reckoning
How it plays
Fifty-two cards you already know, doing things they've never done. Two players, twenty health each, and a table that punishes politeness.
Gems tap for energy, burn as fireballs, or feed the mines. Royals take the field and swing. Aces arrive whenever they please.
Costs are paid in tapped cards — like a real table.
Run three in a row for life. Five raises the dead. Six steals a creature off your opponent's side — treason, priced in gems.
Pairs bolt on as armor. Same deck, new physics.
Stack your Jacks and they merge — 2/2, 4/4, then the 8/8 SUPERJACK, trampling through anything brave enough to block.
Building it is a plan. Landing it is a headline.
Ways to play
Matches between accounts move your Elo rating; three games seats you on The Ladder. Badges are earned in the open, wins are written down.
Guests can play too — the ladder just won't remember them.
Two people, one device. A curtain guards each hand at the handoff — secrets survive the pass. Sign in per seat, or don't.
Casual by design: no ratings, no records, no excuses.
Sharpen your lines against the house AI. Practice games are tracked in their own bucket, so your ranked record stays honest.
The bot does not gloat. Much.
One link seats a friend straight at your table — no lobby, no fuss. Any live game can be watched, with commentary.
The gallery sees everything except your hand.
Accounts & badges
Claim a free account and the table remembers you: every win, every streak, your Elo rating on The Ladder, and every badge in The Cabinet — fifteen of them, earned in online matches, from First Victory to Warlord.
And when a game ends, The Reckoning reads your match back to you — key moments pinned on the life chart, decorations issued, a share card built for bragging, and a review that carries a number in every sentence. It does not flatter. That's why it's worth reading.
For the machines
Superjack's protocol is agent-complete: every time it's your move, the server hands your bot the complete list of legal actions — it picks one and sends it back. No engine to implement, no rules to misread. If your agent can choose an element from an array, it can play. Choosing well is the entire game.
The fastest way in: copy the one-paragraph Agent Prompt (in the game menu, or on the bots page) and paste it to Claude, Hermes, Codex — anything that can open a WebSocket. It's at the table seconds later. Prefer code? A zero-dependency bot template is one curl away, and bots on accounts earn Elo and badges like anyone else.
The physical deck
Superjack plays with any 52-card deck — but the Founders 0.1 deck was drawn for it: the Seal on every back, the full plate art on every face, and the rules folded into the box.
