diff --git a/codeclash/arenas/__init__.py b/codeclash/arenas/__init__.py
index 04324097..b1152843 100644
--- a/codeclash/arenas/__init__.py
+++ b/codeclash/arenas/__init__.py
@@ -4,6 +4,7 @@
 from codeclash.arenas.bridge.bridge import BridgeArena
 from codeclash.arenas.corewar.corewar import CoreWarArena
 from codeclash.arenas.dummy.dummy import DummyArena
+from codeclash.arenas.gomoku.gomoku import GomokuArena
 from codeclash.arenas.halite.halite import HaliteArena
 from codeclash.arenas.halite2.halite2 import Halite2Arena
 from codeclash.arenas.halite3.halite3 import Halite3Arena
@@ -17,6 +18,7 @@
     BridgeArena,
     CoreWarArena,
     DummyArena,
+    GomokuArena,
     HaliteArena,
     Halite2Arena,
     Halite3Arena,
diff --git a/codeclash/arenas/gomoku/Gomoku.Dockerfile b/codeclash/arenas/gomoku/Gomoku.Dockerfile
new file mode 100644
index 00000000..9a494c0b
--- /dev/null
+++ b/codeclash/arenas/gomoku/Gomoku.Dockerfile
@@ -0,0 +1,18 @@
+FROM ubuntu:22.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install Python 3.10, pip, and prerequisites
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends \
+    curl ca-certificates python3.10 python3.10-venv \
+    python3-pip python-is-python3 wget git build-essential jq curl locales \
+ && rm -rf /var/lib/apt/lists/*
+
+# Clone Gomoku game repository
+RUN git clone https://github.com/CodeClash-ai/Gomoku.git /workspace \
+    && cd /workspace \
+    && git remote set-url origin https://github.com/CodeClash-ai/Gomoku.git
+WORKDIR /workspace
+
+# No additional dependencies needed - engine uses only standard library
diff --git a/codeclash/arenas/gomoku/__init__.py b/codeclash/arenas/gomoku/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/codeclash/arenas/gomoku/gomoku.py b/codeclash/arenas/gomoku/gomoku.py
new file mode 100644
index 00000000..843d9828
--- /dev/null
+++ b/codeclash/arenas/gomoku/gomoku.py
@@ -0,0 +1,81 @@
+import re
+
+from codeclash.agents.player import Player
+from codeclash.arenas.arena import CodeArena, RoundStats
+from codeclash.constants import RESULT_TIE
+from codeclash.utils.environment import assert_zero_exit_code
+
+GOMOKU_LOG = "result.log"
+
+
+class GomokuArena(CodeArena):
+    name: str = "Gomoku"
+    submission: str = "main.py"
+    description: str = """Your bot (`main.py`) controls a Gomoku player on a 15x15 board.
+Players take turns placing stones. Win by connecting 5 stones in a row (horizontally, vertically, or diagonally).
+Black plays first.
+
+Your bot must implement:
+    def get_move(board: list[list[int]], color: str) -> tuple[int, int]
+
+Board representation: 0=empty, 1=black, 2=white
+Color: "black" or "white"
+"""
+
+    def __init__(self, config, **kwargs):
+        super().__init__(config, **kwargs)
+        assert len(config["players"]) == 2, "Gomoku is a two-player game"
+
+    def execute_round(self, agents: list[Player]) -> None:
+        args = [f"/{agent.name}/{self.submission}" for agent in agents]
+        cmd = f"python engine.py {' '.join(args)} -r {self.game_config['sims_per_round']} > {self.log_env / GOMOKU_LOG};"
+        self.logger.info(f"Running game: {cmd}")
+        assert_zero_exit_code(self.environment.execute(cmd))
+
+    def get_results(self, agents: list[Player], round_num: int, stats: RoundStats):
+        with open(self.log_round(round_num) / GOMOKU_LOG) as f:
+            round_log = f.read()
+        lines = round_log.split("FINAL_RESULTS")[-1].splitlines()
+
+        scores = {}
+        for line in lines:
+            match = re.search(r"Bot\_(\d)\_main:\s(\d+)\srounds\swon", line)
+            if match:
+                bot_id = match.group(1)
+                rounds_won = int(match.group(2))
+                scores[agents[int(bot_id) - 1].name] = rounds_won
+
+        # Handle draws
+        draw_match = re.search(r"Draws:\s(\d+)", round_log)
+        if draw_match:
+            draws = int(draw_match.group(1))
+            if draws > 0:
+                scores[RESULT_TIE] = draws
+
+        stats.winner = max(scores, key=scores.get) if scores else "unknown"
+        # Check for tie (equal scores)
+        if scores:
+            max_score = max(scores.values())
+            winners_with_max = [k for k, v in scores.items() if v == max_score and k != RESULT_TIE]
+            if len(winners_with_max) > 1:
+                stats.winner = RESULT_TIE
+
+        stats.scores = scores
+        for player, score in scores.items():
+            if player != RESULT_TIE:
+                stats.player_stats[player].score = score
+
+    def validate_code(self, agent: Player) -> tuple[bool, str | None]:
+        if self.submission not in agent.environment.execute("ls")["output"]:
+            return False, f"No {self.submission} file found in the root directory"
+
+        bot_content = agent.environment.execute(f"cat {self.submission}")["output"]
+
+        if "def get_move(" not in bot_content:
+            return (
+                False,
+                f"{self.submission} must define a get_move(board, color) function. "
+                "See the game description for the required signature."
+            )
+
+        return True, None
diff --git a/configs/test/gomoku.yaml b/configs/test/gomoku.yaml
new file mode 100644
index 00000000..a3b9648b
--- /dev/null
+++ b/configs/test/gomoku.yaml
@@ -0,0 +1,25 @@
+tournament:
+  rounds: 3
+game:
+  name: Gomoku
+  sims_per_round: 10
+  args:
+    board_size: 15
+    timeout: 10
+players:
+- agent: dummy
+  name: p1
+- agent: dummy
+  name: p2
+prompts:
+  game_description: |
+    You are a software developer ({{player_id}}) competing in a coding game called Gomoku.
+    Your bot (`main.py`) controls a Gomoku player on a 15x15 board.
+    Players take turns placing stones. Win by connecting 5 stones in a row (horizontally, vertically, or diagonally).
+    Black plays first.
+
+    The game is played in {{rounds}} rounds. For every round, you (and your competitor) edit program code that controls your bot. This is round {{round}}.
+    After you and your competitor finish editing your codebases, the game is run automatically.
+
+    Your task: improve the bot in `main.py`, located in {{working_dir}}.
+    {{working_dir}} is your codebase, which contains both your bot and supporting assets.