Developer built three football party games, each as a single double-click HTML file

A developer created three browser-based football games designed for social viewing parties, with a strict self-imposed rule: every game must be a single HTML file that opens with a double-click, requiring no npm, no build tools, and no server. The first game is a quiz show format with four rounds, featuring leaderboard guessing, category questions, a hidden-theme round, and a multi-clue final. The second is a bingo-style game where players tap a 5×5 grid of live match events on their phones, with all card state encoded directly in the URL hash using a seeded random number generator. A key technical challenge was answer validation for the quiz, solved by normalising Unicode apostrophe variants, collapsing Ukrainian-specific letters, and applying Levenshtein distance matching to handle typos and alternate club name spellings. The project was built across three weekends, prioritising shareability — if a file could not simply be sent to a friend, it was considered a failure.