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Cards, craft & the project

Cards4.net Blog

Stories about card games, fair shuffles, thoughtful product choices, and what we learn while building Cards4.net.

8 articles

  • 8 min read

    How Random Is Our Shuffle? An Honest Answer

    How Cards4.net shuffles cards: seed generation, deterministic deals, fairness verification, solvable seed libraries, and common rigging myths.

  • 10 min read

    The Surprising History of Hearts Card Game

    Explore the history of Hearts, from Reversis and Black Lady rules to Shooting the Moon, Windows Hearts, and modern online play.

  • 10 min read

    The Math Behind Daily Card Game Challenges

    How daily card game challenges work: seed selection, solvable deals, leaderboard distributions, percentiles, and fair scoring.

  • 10 min read

    What We Learned Building Cards4.net

    A build-in-public retrospective on Cards4.net: Phoenix, React, server-authoritative game state, privacy-first analytics, and lessons learned.

  • 12 min read

    Why We'll Never Show You an Ad

    Why Cards4.net is ad-free and privacy-first, how we think about sustainable card games, and what no tracking means in practice.