A free two-player Life Point counter with one-step undo, plus dice and coin flip — built for meet-up duels. Runs in your browser, keeps your running duel across a refresh, and needs no sign-in.
游戏王决斗辅助工具：双人生命值计算器（支持逐步撤销）、骰子与硬币。面交对局时打开即用，刷新不丢当前局，无需登录。