--- title: "Bet On Good: a reading board on games of chance" url: https://betongood.foundation/ description: "A reading board on games of chance: how odds and house edge are calculated, the history of lotteries and bookmaking, how games are designed, and how regulation developed." --- # Bet On Good: a reading board on games of chance [Bet On Good](https://betongood.foundation/) Notes on chance, odds and the design of games Board index What this board covers How the numbers here are worked out Bet On Good — orientation **Panel**: Orientation **Subject**: Board scope **Revised**: 17 August 2026 This board is a reading index about games of chance: how their odds are counted, where their commercial forms came from, how the games themselves are put together, and how the rules governing them accumulated. It is written for people who want to understand the subject rather than to take part in it. Every figure quoted anywhere on the board is arithmetic worked in the text from the stated rules of the game being discussed. Nothing here is a claim about any operator, product or market, and no game, venue or service is named, rated, compared or recommended. Where a calculation appears, the working is shown so it can be checked rather than taken on trust. Entries are grouped by subject rather than by date. The four category tables below list what is on the board; the index beneath them lists the individual entries with the subject tag that describes what kind of writing each one is. ## From the notebook [01**How Sportsbook Bonus Terms Work: A First-Time Guide**Sep 14, 2026](https://betongood.foundation/how-sportsbook-bonus-terms-work-a-first-time-guide/) [02**The 10 Best Sweepstakes Casinos for Progressive Jackpots**Aug 22, 2026](https://betongood.foundation/the-10-best-sweepstakes-casinos-for-progressive-jackpots/) [03**Top 7 Sweepstakes Casinos for Daily Free Coins**Aug 16, 2026](https://betongood.foundation/top-7-sweepstakes-casinos-for-daily-free-coins/) [04**Top 5 Alternatives of SOFTSWISS for Modular And White-Label Platforms**Aug 15, 2026](https://betongood.foundation/top-5-alternatives-of-softswiss-for-modular-and-white-label-platforms/) [05**Top 3 Alternatives of EveryMatrix for Turnkey Casino Solutions**Aug 13, 2026](https://betongood.foundation/top-3-alternatives-of-everymatrix-for-turnkey-casino-solutions/) [06**Top 3 Alternatives of EveryMatrix for Game Aggregation Services**Aug 13, 2026](https://betongood.foundation/top-3-alternatives-of-everymatrix-for-game-aggregation-services/) [07**10 WhatsApp Bulk Message Sender Tools for Fast-Growing Startups**Aug 13, 2026](https://betongood.foundation/10-whatsapp-bulk-message-sender-tools-for-fast-growing-startups/) [08**Top 5 Sweepstakes Casinos for Instant Withdrawals**Aug 10, 2026](https://betongood.foundation/top-5-sweepstakes-casinos-for-instant-withdrawals/) More [09**How to Choose the Best Sweepstakes Casinos for Real Cash Redemption**Aug 10, 2026](https://betongood.foundation/how-to-choose-the-best-sweepstakes-casinos-for-real-cash-redemption/) [10**Best Sweepstakes Casinos for Social Casino Games (2026)**Aug 09, 2026](https://betongood.foundation/best-sweepstakes-casinos-for-social-casino-games-2026/) [11**Top 5 Sweepstakes Casinos for Weekend Bonuses**Aug 05, 2026](https://betongood.foundation/top-5-sweepstakes-casinos-for-weekend-bonuses/) [12**Best iGaming Platforms for Multi-Brand Front-End Management in 2026**Aug 02, 2026](https://betongood.foundation/best-igaming-platforms-for-multi-brand-front-end-management-in-2026/) [13**SweepstakesTable for Legit Payouts: Why It's the Best Choice**Jul 30, 2026](https://betongood.foundation/sweepstakestable-for-legit-payouts-why-it-s-the-best-choice/) [14**Unified Team Inbox for Ecommerce Stores: What Actually Works**Jul 29, 2026](https://betongood.foundation/unified-team-inbox-for-ecommerce-stores-what-actually-works/) [15**The 3 Best iGaming Platforms for Deep Crypto Integration**Jul 28, 2026](https://betongood.foundation/the-3-best-igaming-platforms-for-deep-crypto-integration/) [16**The 10 Best Sweepstakes & Social Casinos for Mobile App**Jul 27, 2026](https://betongood.foundation/the-10-best-sweepstakes-social-casinos-for-mobile-app/) The Mathematics of Odds *Sample spaces, odds notation, expected value and why the arithmetic settles the question. [Open the category index](https://betongood.foundation/odds/).* | Entry type | Entry | Last updated | Sections | Figures | |---|---|---|---|---| | worked arithmetic | [Probability, odds and the gap between them](https://betongood.foundation/odds/probability-and-odds/)Two ways of writing the same fact, and the conversion that keeps them honest. | 17 August 2026 | 4 | 1 | | worked arithmetic | [House edge and expected value](https://betongood.foundation/odds/house-edge-and-expected-value/)One calculation per wager, and the reason the arithmetic never reverses. | 17 August 2026 | 4 | 1 | | worked arithmetic | [Variance, the long run and the law of large numbers](https://betongood.foundation/odds/variance-and-the-long-run/)Why short runs look like anything at all and long runs look like the edge. | 17 August 2026 | 4 | 1 | Lotteries and Betting in History *Drawing lots as public finance, the rise of fixed-odds bookmaking, and the pool. [Open the category index](https://betongood.foundation/history/).* | Entry type | Entry | Last updated | Sections | Figures | |---|---|---|---|---| | narrative entry | [Lotteries, from public finance to state monopoly](https://betongood.foundation/history/lotteries/)Drawing lots as a way of raising money, and the long argument about who may run one. | 17 August 2026 | 4 | 0 | | worked arithmetic | [Bookmaking, odds notation and the overround](https://betongood.foundation/history/bookmaking-and-betting/)Making a book on events with no sample space, and the margin that makes it work. | 17 August 2026 | 4 | 1 | How Games Are Built *Paytables, hold targets, reel weighting and the trade between edge and playing time. [Open the category index](https://betongood.foundation/design/).* | Entry type | Entry | Last updated | Sections | Figures | |---|---|---|---|---| | worked arithmetic | [How a game of chance is designed](https://betongood.foundation/design/how-games-are-designed/)Working backwards from a hold target to a paytable, and the constraints in between. | 17 August 2026 | 4 | 1 | | worked arithmetic | [The mathematics inside a reel machine](https://betongood.foundation/design/slot-machine-mathematics/)Virtual reels, weighted stops and the arithmetic that turns a paytable into a return. | 17 August 2026 | 4 | 1 | Rules and Regulation *From prohibition to licensing, laboratory testing and disclosure of the numbers. [Open the category index](https://betongood.foundation/regulation/).* | Entry type | Entry | Last updated | Sections | Figures | |---|---|---|---|---| | narrative entry | [How regulation of games of chance developed](https://betongood.foundation/regulation/how-regulation-developed/)Prohibition, licensing, laboratory testing and the slow arrival of disclosure. | 17 August 2026 | 5 | 0 | Sections within each entry [Probability, odds and the gap between them](https://betongood.foundation/odds/probability-and-odds/) The Mathematics of Odds · arithmetic - [Counting the outcomes](https://betongood.foundation/odds/probability-and-odds/#s1) - [Odds are a ratio, not a fraction](https://betongood.foundation/odds/probability-and-odds/#s2) - [Where the gap opens](https://betongood.foundation/odds/probability-and-odds/#s3) - [Independence and the gambler's fallacy](https://betongood.foundation/odds/probability-and-odds/#s4) [House edge and expected value](https://betongood.foundation/odds/house-edge-and-expected-value/) The Mathematics of Odds · arithmetic - [The calculation](https://betongood.foundation/odds/house-edge-and-expected-value/#s1) - [Why the number does not change with the bet chosen](https://betongood.foundation/odds/house-edge-and-expected-value/#s2) - [Edge, hold and the volume of play](https://betongood.foundation/odds/house-edge-and-expected-value/#s3) - [The one result that follows](https://betongood.foundation/odds/house-edge-and-expected-value/#s4) [Variance, the long run and the law of large numbers](https://betongood.foundation/odds/variance-and-the-long-run/) The Mathematics of Odds · arithmetic - [Two numbers, not one](https://betongood.foundation/odds/variance-and-the-long-run/#s1) - [What the law of large numbers actually says](https://betongood.foundation/odds/variance-and-the-long-run/#s2) - [Why a win proves nothing](https://betongood.foundation/odds/variance-and-the-long-run/#s3) - [Risk of ruin](https://betongood.foundation/odds/variance-and-the-long-run/#s4) [Lotteries, from public finance to state monopoly](https://betongood.foundation/history/lotteries/) Lotteries and Betting in History · history - [Drawing lots before there were prizes](https://betongood.foundation/history/lotteries/#s1) - [The financing instrument](https://betongood.foundation/history/lotteries/#s2) - [Abuse, prohibition and the private lottery](https://betongood.foundation/history/lotteries/#s3) - [The monopoly settlement](https://betongood.foundation/history/lotteries/#s4) [Bookmaking, odds notation and the overround](https://betongood.foundation/history/bookmaking-and-betting/) Lotteries and Betting in History · arithmetic - [Betting without a sample space](https://betongood.foundation/history/bookmaking-and-betting/#s1) - [Making a book](https://betongood.foundation/history/bookmaking-and-betting/#s2) - [The overround](https://betongood.foundation/history/bookmaking-and-betting/#s3) - [The pool as the alternative](https://betongood.foundation/history/bookmaking-and-betting/#s4) [How a game of chance is designed](https://betongood.foundation/design/how-games-are-designed/) How Games Are Built · design - [The target comes first](https://betongood.foundation/design/how-games-are-designed/#s1) - [The three quantities being traded](https://betongood.foundation/design/how-games-are-designed/#s2) - [Playing time as the real product](https://betongood.foundation/design/how-games-are-designed/#s3) - [What the designer cannot do](https://betongood.foundation/design/how-games-are-designed/#s4) [The mathematics inside a reel machine](https://betongood.foundation/design/slot-machine-mathematics/) How Games Are Built · design - [The mechanical constraint and how it was removed](https://betongood.foundation/design/slot-machine-mathematics/#s1) - [Weighting, and why the strip cannot be counted](https://betongood.foundation/design/slot-machine-mathematics/#s2) - [Working out the return](https://betongood.foundation/design/slot-machine-mathematics/#s3) - [Random selection and the meaning of a cycle](https://betongood.foundation/design/slot-machine-mathematics/#s4) [How regulation of games of chance developed](https://betongood.foundation/regulation/how-regulation-developed/) Rules and Regulation · history - [The first layer: prohibition](https://betongood.foundation/regulation/how-regulation-developed/#s1) - [The second layer: licensing and the handling of money](https://betongood.foundation/regulation/how-regulation-developed/#s2) - [The third layer: testing the game itself](https://betongood.foundation/regulation/how-regulation-developed/#s3) - [The fourth layer: disclosure](https://betongood.foundation/regulation/how-regulation-developed/#s4) - [Why the layers arrived in that order](https://betongood.foundation/regulation/how-regulation-developed/#s5) What is on the board *Board contents* | Entries published on the board | 8 | |---|---| | Subject categories | 4 | | Sections across all entries | 33 | | Worked figure tables | 6 | | Entries carrying worked arithmetic | 6 | | Most recently revised entry | [How regulation of games of chance developed](https://betongood.foundation/regulation/how-regulation-developed/) | Jump to category [The Mathematics of Odds](https://betongood.foundation/odds/) [Lotteries and Betting in History](https://betongood.foundation/history/) [How Games Are Built](https://betongood.foundation/design/) [Rules and Regulation](https://betongood.foundation/regulation/) [Return to board index](https://betongood.foundation/) Entry carries worked arithmetic with the steps shown. Entry is narrative: history, development or design reasoning. All times on this board are UTC. Dates shown are the date an entry was last revised. Bet On Good.