3=0

  ## Out-spot your opponent in 2 minutes.

  **3=0** is a real-time multiplayer card-matching duel built on the

classic **SET** principle. Spot the valid triple before your rival does

  — clear the board, score points, climb the ELO ladder.

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  ### 🎮 Two ways to play

  - **1v1 Duel** — Match against a real player in real time. Ranked ELO

    ladder. Bots fill in when no one's queued, so you never wait.

  - **Solo** — Single-player puzzle mode for practice or to chase your

    personal best.

  ### ⚡ Why you'll lose track of time

  - **2-minute rounds** — One match, two minutes, no fluff.

  - **Easy to learn, hard to master** — The rule fits on one line.

    Reading the board fast is the actual skill.

  - **Free & browser-based** — No download, no install. Click *Run game*

    and you're in.

  - **Minimalist neon UI** — Clean geometry, dark mode, designed to keep

    your eyes on the cards.

  ### 🧠 The rule, in one line

  Every card has four dimensions — **count, shape, color, fill**. Three

  cards form a valid SET when, for every dimension, the values are

  *either all the same or all different*.

  ---

  ### 中文简介

  **3=0** 是一款基于经典 SET 规则的实时联机消除对战。

  看谁先认出三张"同或全不同"的卡组,清盘抢分,登顶 ELO 排行榜。

  - **1v1 实时对战** — 真人对手 + ELO 排位;没人匹配时 Bot 顶上,永不排队

  - **单人挑战** — 离线刷分,挑战个人最佳

  - **2 分钟一局** — 节奏快,易学难精

  - **浏览器即玩** — 无需下载,点 *Run game* 就开打

  四个维度(数量、形状、颜色、填充),三张牌"同或全不同"即为有效组合。