Design a real-time trivia battle royale with live spectators

Design a trivia battle royale. A room holds dozens to a hundred or more players. Questions go out round by round; after each round, players who answered wrong and the slowest players are knocked out, until one player is left and wins. Spectators can watch games live.

Cover how questions are released to every player at the same moment, how answers and their timing are collected and judged fairly, how eliminations are computed and broadcast, how spectators follow a game without slowing the players down, and what happens when a player's connection drops mid-round.