Every Game on 6proclub — One Fairness Engine, Many Games

A tour of the 6proclub lineup — backgammon today, War next, chess and checkers and yahtzee on the roadmap. The point that ties them all together: one verifiable hash chain, every game type.

When we sat down to design 6proclub, one question framed every decision: what does an honest games club look like online?

The answer, for us, was not "another backgammon site." Backgammon is the heart of the club — it is what we play, what we are best at, and what we built the platform around. But the long-term vision is broader. A real club has a backgammon table, a card table, a chess board in the corner, and the regulars know that whichever game you sit down to, the house plays straight.

That is what we are building. This post is the tour.

The unifying idea

Before getting into the games themselves, the part that ties them together: every game on 6proclub runs through the same provably fair hash chain. We are the only platform we know of that does this across every game type, not just one product.

When you sit down to a backgammon match, every dice roll is committed and revealed. When you sit down to a War hand, the entire shuffle is committed before the cut, and the full deck order is revealed at the end so you can verify the cards came up in the order the hash chain mandated. When chess and checkers ship, the same chain wraps any randomized element they use (move-clock seeds, opening-position randomizers if we offer them, anything else where chance enters). When yahtzee ships, every dice roll is on the chain.

The fairness engine is part of the platform substrate, not a per-product feature. It does not matter which game you are playing — the contract is the same: nothing on the table was decided after the chain was committed.

That principle is the reason this list exists at all. Anything we cannot put on the chain, we do not ship.

Backgammon — the founding game

Status: Live.

Format: 3D board, real human opponents over WebSocket, real-money stakes (free play and bot games also available). Doubling cube fully implemented across both legacy and authoritative-state protocols. ELO rating that climbs from 1500 over time.

The headline product. We render the board in Three.js with proper materials, a club-room background, and a tactile dice cup. Both players are authoritative on their own moves but the server is the source of truth — disconnects survive a reconnection window, dice are committed by the server before the game starts and revealed at the end, and the full state machine handles the cube, the bar, bear-off, gammons, and resignation cleanly.

Bot opponents at three skill levels for solo practice. Peer-to-peer money games run through the escrow system: both stakes are deducted before the game starts, the winner takes the pot, and a small rake is the only thing the platform takes off the top. No house edge.

For strategy, we have written about the doubling cube and ELO ratings elsewhere on this blog. For the fairness side, see the provably-fair walkthrough.

War — shipping next

Status: Coming soon (rules engine and backend already in place; UI in progress).

Format: The fastest card game in the club. Cut the deck, flip the cards, higher card wins. Ties trigger a "war" — three cards face down, fourth face up, winner takes all eight. Repeat until one player has the deck.

War is in the lineup specifically because of how cleanly it maps to provably fair play. The randomness is the shuffle. There are no decisions to make — the entire game is deterministic given the deck order. Which means we can commit a single hash before the game starts (covering the full 52-card shuffle) and reveal the deck at the end. Anyone who wants to verify can re-shuffle the deck themselves with the published seed and confirm every card came up in the order the chain mandated.

It is the simplest possible test of the fairness model, and that is part of why we like it. If you ever wonder whether the platform is honoring its commitments, War is the easiest game to audit.

The plan is to launch War with the same 3D table treatment the backgammon board gets — a proper card flip, a dealer's shuffle animation, escrow on money games, ELO rating earned in War sitting alongside your backgammon rating in your profile.

Chess — on the roadmap

Status: Coming soon.

Chess does not have a randomized element in classical play. So why is it on a "provably fair" platform's roadmap?

Two reasons. First: chess matters. A games club without a chess board is incomplete, and the same principles that make us trustworthy for dice — segregated funds, escrow on stakes, transparent rake, KYC on withdrawals — apply just as much to chess. The fairness engine is a minimum bar; it is not the only one.

Second: when we ship chess, we will ship it with the option of random opening positions (Chess960 / Fischer Random) for variant matches. That randomization will be on the same hash chain as our dice, so a 6proclub Chess960 match will have a verifiable opening-position commit. Most chess platforms either do not offer Chess960 or do offer it without a fairness proof. Both are fine; we just want ours to be the one you can audit.

Checkers — on the roadmap

Status: Coming soon.

Checkers, like chess, is fully deterministic in classical play — eight by eight board, twelve pieces a side, no dice. We will ship it because (a) the club-room aesthetic supports it perfectly, and (b) it is one of the games where casual players can pick up a real-money rating without needing months to learn the openings.

If we offer randomized variants (e.g., randomized starting positions), they will be on the chain.

Yahtzee — on the roadmap

Status: Coming soon.

Yahtzee is the purest dice game in the lineup. Five dice, three rolls per turn, scorecard. The fairness chain wraps every roll the same way it wraps backgammon dice. Variance is high — Yahtzee is a game where one player can clearly outplay another and still lose to a hot dice run — but that is part of the appeal, and the rating system handles variance the same way it does in backgammon.

The product question for Yahtzee is whether to ship single-player tournaments, peer-to-peer head-to-head, or both. We will probably do both. The fairness engine cares about neither — every roll on the chain regardless of format.

What is not coming, and why

A short list of things we are explicitly not building:

• Slot machines. A slot is a house-edge product by definition. 6proclub does not run house-edge games. If you want slots, the casino industry has hundreds of options and is well-equipped to serve you. We are not.
• Sports betting. Same reason. Sportsbooks bet against players. We are a peer-to-peer platform.
• Roulette / blackjack. Same reason — house games. They do not fit our model and we have no plans to add them.
• "Crash" or other RNG-driven house games. Particularly tempting on crypto-native platforms because they are fast and addictive. They are also explicitly the products provably-fair tooling has historically been weakest at, and they have the worst player-protection profile in online gaming. We will not be running them.

The lineup will always be skill-based games where peer-to-peer makes sense and where every randomized element fits on the chain. That is the long-term constraint. Within it, there is plenty of room to grow.

How the rating system handles multiple games

When chess and checkers and the rest land, you will not have one ELO rating any more — you will have one per game. They live alongside each other on your profile. Strong backgammon players do not necessarily make strong chess players, and the rating system reflects that. Streaks, achievements, and bankroll are cross-game; ratings are per-game.

For us, the question of how good is this person? should always be answered with reference to the specific game they are about to sit down to.

When does each game ship?

We do not promise dates and we do not run "betas" that are really alpha. The pattern we are committing to:

• Live means: you can deposit, play for money, withdraw, and verify games. Backgammon is here today.
• Coming soon means: the rules engine and core mechanics are written, the fairness chain is wired, but the polish (3D table, animations, escrow integration, mobile responsive checks) is not yet at the bar we set for shipping. War is here today.
• Roadmap means: it is in our plan but not in active development.

When the next game flips from "coming soon" to "live," it will be announced on this blog before anywhere else. If you want to be the first to know, the blog is the right place to subscribe — the hash-chain commitment to that announcement post will, naturally, be in our archive.

Until then, the backgammon table is open. Pull up a chair.