diff --git a/src/app/(frontend)/radio/actions.ts b/src/app/(frontend)/radio/actions.ts
new file mode 100644
index 0000000..1776a7f
--- /dev/null
+++ b/src/app/(frontend)/radio/actions.ts
@@ -0,0 +1,207 @@
+"use server";
+
+import config from "@payload-config";
+import { getPayload } from "payload";
+import { emitGameEvent } from "@/utils/event-log/emit";
+import { EventTypes } from "@/utils/event-log/eventTypes";
+import { broadcastToUser } from "@/lib/realtime/bus";
+
+interface ActionResult<T = undefined> {
+  success: boolean;
+  error?: string;
+  data?: T;
+}
+
+export interface RadioStats {
+  gamesPlayed: number;
+  totalMessages: number;
+  bestScore: number;
+  bestAccuracy: number;
+  bestSprintTimeMs: number;
+  radioTrafficXp: number;
+  xpEarned: number;
+}
+
+const SPRINT_MESSAGE_COUNT = 10;
+const MAX_WATCH_MESSAGES = 30;
+const MAX_SCORE_PER_GAME = 5000;
+const MAX_SPRINT_TIME_MS = 600_000;
+
+type RadioMode = "sprint" | "watch";
+
+function isRadioMode(value: string): value is RadioMode {
+  return value === "sprint" || value === "watch";
+}
+
+async function authenticate() {
+  const payloadConfig = await config;
+  const payload = await getPayload({ config: payloadConfig });
+  const { headers } = await import("next/headers");
+  const hdrs = await headers();
+  const { user } = await payload.auth({
+    headers: hdrs,
+    canSetHeaders: false,
+  });
+
+  if (!user) {
+    throw new Error("Unauthorized");
+  }
+
+  return { payload, user };
+}
+
+export async function submitRadioResult(input: {
+  score: number;
+  messageCount: number;
+  correctMessages: number;
+  accuracy: number;
+  mode: RadioMode;
+  timeMs?: number;
+}): Promise<ActionResult<RadioStats>> {
+  try {
+    const { payload, user } = await authenticate();
+
+    if (!isRadioMode(input.mode)) {
+      return { success: false, error: "Invalid result." };
+    }
+    const score = Math.floor(input.score);
+    if (!Number.isFinite(score) || score < 0 || score > MAX_SCORE_PER_GAME) {
+      return { success: false, error: "Invalid score." };
+    }
+    if (
+      !Number.isInteger(input.messageCount) ||
+      (input.mode === "sprint"
+        ? input.messageCount !== SPRINT_MESSAGE_COUNT
+        : input.messageCount < 1 || input.messageCount > MAX_WATCH_MESSAGES)
+    ) {
+      return { success: false, error: "Invalid result." };
+    }
+    if (
+      !Number.isInteger(input.correctMessages) ||
+      input.correctMessages < 0 ||
+      input.correctMessages > input.messageCount
+    ) {
+      return { success: false, error: "Invalid result." };
+    }
+    if (!Number.isFinite(input.accuracy) || input.accuracy < 0 || input.accuracy > 1) {
+      return { success: false, error: "Invalid result." };
+    }
+    const sprintTime = input.timeMs;
+    if (
+      input.mode === "sprint" &&
+      (typeof sprintTime !== "number" || !Number.isFinite(sprintTime) || sprintTime <= 0 || sprintTime > MAX_SPRINT_TIME_MS)
+    ) {
+      return { success: false, error: "Invalid result." };
+    }
+
+    const profileRes = await payload.find({
+      collection: "profiles",
+      where: { user: { equals: user.id as number } },
+      limit: 1,
+      depth: 0,
+      overrideAccess: true,
+    });
+    const profile = profileRes.docs[0];
+    if (!profile) {
+      return { success: false, error: "No profile found for this user." };
+    }
+
+    const progression = (profile.progression ?? {}) as {
+      xp?: unknown;
+      minigames?: {
+        radioTraffic?: {
+          gamesPlayed?: number;
+          totalMessages?: number;
+          bestScore?: number;
+          bestAccuracy?: number;
+          bestSprintTimeMs?: number;
+          xpEarned?: number;
+        };
+      };
+    };
+    const current = progression.minigames?.radioTraffic ?? {};
+    const runXp = Math.round(input.correctMessages * 0.1 * 10) / 10;
+    const gamesPlayed = (current.gamesPlayed ?? 0) + 1;
+    const totalMessages = (current.totalMessages ?? 0) + input.correctMessages;
+    const bestScore = Math.max(current.bestScore ?? 0, score);
+    const bestAccuracy = Math.round(Math.max(current.bestAccuracy ?? 0, input.accuracy) * 10000) / 10000;
+    const previousBestSprintTimeMs = current.bestSprintTimeMs ?? 0;
+    const bestSprintTimeMs =
+      input.mode === "sprint" && typeof sprintTime === "number"
+        ? Math.min(previousBestSprintTimeMs > 0 ? previousBestSprintTimeMs : Infinity, Math.round(sprintTime))
+        : previousBestSprintTimeMs;
+    const radioTrafficXp = Math.round(((current.xpEarned ?? 0) + runXp) * 10) / 10;
+
+    const { xp: _xp, ...progressionRest } = progression;
+
+    await payload.update({
+      collection: "profiles",
+      id: profile.id,
+      data: {
+        progression: {
+          ...progressionRest,
+          minigames: {
+            ...(progressionRest.minigames ?? {}),
+            radioTraffic: {
+              gamesPlayed,
+              totalMessages,
+              bestScore,
+              bestAccuracy,
+              bestSprintTimeMs,
+              xpEarned: radioTrafficXp,
+            },
+          },
+        },
+      },
+      overrideAccess: true,
+      depth: 0,
+    });
+    broadcastToUser("profile-update", Number(user.id), {
+      reason: "xp",
+      xpGained: runXp,
+      profileId: profile.id,
+    });
+
+    if (score > 0) {
+      const modeLabel = input.mode === "sprint" ? "sprint" : "watch";
+      await emitGameEvent(payload, {
+        type: EventTypes.MinigameRadioTraffic,
+        message: `Completed a radio traffic ${modeLabel} run with ${input.correctMessages}/${input.messageCount} messages accurate (+${runXp} XP)`,
+        actor: user.id as number,
+        targetCollection: "users",
+        targetId: user.id as number,
+        data: {
+          mode: input.mode,
+          score,
+          messageCount: input.messageCount,
+          correctMessages: input.correctMessages,
+          accuracy: input.accuracy,
+          xpEarned: runXp,
+          bestScore,
+          bestSprintTimeMs,
+          totalMessages,
+          radioTrafficXp,
+        },
+      });
+    }
+
+    return {
+      success: true,
+      data: {
+        gamesPlayed,
+        totalMessages,
+        bestScore,
+        bestAccuracy,
+        bestSprintTimeMs,
+        radioTrafficXp,
+        xpEarned: runXp,
+      },
+    };
+  } catch (error) {
+    const message = error instanceof Error ? error.message : "Unknown error";
+    if (message === "Unauthorized") {
+      return { success: false, error: "You must be logged in." };
+    }
+    return { success: false, error: message };
+  }
+}
diff --git a/src/app/(frontend)/radio/page.tsx b/src/app/(frontend)/radio/page.tsx
new file mode 100644
index 0000000..c5df515
--- /dev/null
+++ b/src/app/(frontend)/radio/page.tsx
@@ -0,0 +1,63 @@
+import type { Metadata } from "next";
+import config from "@payload-config";
+import { getPayload } from "payload";
+import { headers as nextHeaders } from "next/headers";
+import { redirect } from "next/navigation";
+import { Radio } from "lucide-react";
+import { RadioArena } from "@/components/frontend/radio/RadioArena";
+
+export const metadata: Metadata = {
+  title: "Radio Traffic — Polaris Task Force",
+  description: "Intercept and type incoming radio traffic fast + accurately.",
+};
+
+export default async function RadioPage() {
+  const headers = await nextHeaders();
+  const payloadConfig = await config;
+  const payload = await getPayload({ config: payloadConfig });
+  const { user } = await payload.auth({ headers, canSetHeaders: false });
+
+  if (!user) {
+    redirect(`/login?returnTo=${encodeURIComponent("/radio")}`);
+  }
+
+  const profileRes = await payload.find({
+    collection: "profiles",
+    where: { user: { equals: user.id as number } },
+    limit: 1,
+    depth: 0,
+    overrideAccess: true,
+    select: {
+      progression: {
+        minigames: true,
+      },
+    },
+  });
+
+  const radioTraffic = profileRes.docs[0]?.progression?.minigames?.radioTraffic ?? {};
+  const stats = {
+    gamesPlayed: radioTraffic.gamesPlayed ?? 0,
+    totalMessages: radioTraffic.totalMessages ?? 0,
+    bestScore: radioTraffic.bestScore ?? 0,
+    bestAccuracy: radioTraffic.bestAccuracy ?? 0,
+    bestSprintTimeMs: radioTraffic.bestSprintTimeMs ?? 0,
+    radioTrafficXp: radioTraffic.xpEarned ?? 0,
+    xpEarned: 0,
+  };
+
+  return (
+    <div className="flex min-w-0 flex-col gap-6 p-5">
+      <div className="flex flex-col gap-1">
+        <div className="flex items-center gap-2">
+          <Radio className="size-5 text-muted-foreground" />
+          <h1 className="text-lg font-semibold">Radio Traffic</h1>
+        </div>
+        <p className="text-sm text-muted-foreground">
+          Intercept and type incoming radio traffic fast + accurately.
+        </p>
+      </div>
+
+      <RadioArena initialStats={stats} currentUserId={user.id as number} />
+    </div>
+  );
+}