Ever wondered how EuroJackpot system tickets really work? This educational web application lets you explore the fascinating world of lottery mathematics through realistic simulations and detailed analytics.
EuroJackpot Simulator helps you understand:
- Instant Results: One-click ticket generation with immediate simulation results
- System Tickets: How selecting more numbers affects your chances and costs
- Progressive Learning: Start simple, then explore advanced customisation options
- Real Probabilities: What actually happens when you play different strategies
- Cost vs. Benefit: Whether system tickets are worth the extra expense
- Monte Carlo Analysis: See patterns emerge from thousands of simulated draws
Instead of guessing about lottery strategies, you can see the data. Run 10,000 simulations to understand what "1 in 95 million" really means in practice. Perfect for statistics students, curious players, or anyone who loves probability puzzles.
- Simple Mode: One-click generation of 10 random tickets with auto-simulation
- Custom Mode: Full control with 1-500 unique tickets per batch
- Progressive Disclosure: Smooth transition from simple to advanced features
- System combinations (5/50 + 2/12 format) from 5-16 main and 2-12 Euro numbers
- Transparent €2.00 per line pricing with immediate cost calculation
- Multiple generation methods: random, historically weighted, or custom favorite numbers
- Visual favorite number selector for personalised ticket generation
- Individual ticket deletion with automatic recalculation
- Comprehensive frequency analysis with historical draw data visualisation
- Efraimidis-Spirakis algorithm for exact weighted sampling without replacement
- Immediate mock draw with match highlighting
- Real-time ROI and net profit calculation
- Visual highlighting of winning numbers across all tickets
- Win class identification (Classes 1-12)
- Large-scale simulations (100-10,000 draws)
- Real-time progress streaming with NDJSON
- Comprehensive analytics: distributions, percentiles, profitability rates
- Detailed statistics: mean, median, standard deviation, p25/p75/p95
- Optional JSON export of detailed results
- Cancellation support for long-running operations
- Graceful fallbacks for external API failures
- 10-minute caching for statistics data
- Edge deployment on Cloudflare Workers
- Responsive design optimised for desktop and mobile
The simulator uses the official EuroJackpot format (5 numbers from 1-50, plus 2 Euro numbers from 1-12) and real win-class payouts to provide accurate simulations.
Quick Start: Click "Generate Random Tickets" for instant results with 10 standard tickets and automatic simulation.
Advanced Use: Switch to custom mode to choose your system size, optionally select favorite numbers based on personal preference or frequency analysis, generate tickets, and run either single draws or large-scale Monte Carlo simulations to see the mathematics in action. Compare different strategies including random selection, weighted historical frequencies, and custom number preferences.
- Try It Online: Visit the live application eurojackpot.vv42.workers.dev
- Run Locally:
For detailed setup, testing, and contribution guidelines, see ai_docs/COMMON_GUIDE.md
npm install npm run dev # Starts on localhost:3000 - Understand the Code: Review ai_docs/ARCHITECTURE.md for technical details
This project demonstrates several interesting concepts:
- Probability Theory: See how mathematical expectations play out in practice
- System Tickets: Understand the trade-offs between coverage and cost
- Custom Strategies: Compare random vs frequency-based vs favorite number approaches
- Historical Analysis: Explore draw frequency patterns and their impact on outcomes
- Monte Carlo Methods: Watch statistical patterns emerge from large samples
- Web Performance: Real-time streaming of long-running calculations
- Product Requirements - What we're building and why
- Architecture Guide - Technical implementation details
- Development Guide - Setup, testing, and contribution guidelines
This simulator is designed for education and entertainment:
- No real-money transactions or gambling features
- Clear cost transparency (€2.00 per line, matching real EuroJackpot pricing)
- Educational focus on understanding probabilities and mathematics
- Does not predict or guarantee real lottery outcomes