diff --git a/packages/shared-packets/test/GameMessagePayload.test.ts b/packages/shared-packets/test/GameMessagePayload.test.ts
new file mode 100644
index 000000000..39ccb7246
--- /dev/null
+++ b/packages/shared-packets/test/GameMessagePayload.test.ts
@@ -0,0 +1,56 @@
+import { describe, it, expect } from "vitest";
+import { GameMessagePayload } from "../src/GameMessagePayload.js";
+
+describe("GameMessagePayload", () => {
+	it("should create a copy of the payload", () => {
+		const originalPayload = new GameMessagePayload();
+		originalPayload.deserialize(Buffer.from("test data"));
+
+		const copiedPayload = GameMessagePayload.copy(originalPayload);
+
+		expect(copiedPayload).not.toBe(originalPayload);
+		expect(copiedPayload.serialize()).toEqual(originalPayload.serialize());
+	});
+
+	it("should return the correct byte size", () => {
+		const payload = new GameMessagePayload();
+		payload.deserialize(Buffer.from("test data"));
+
+		expect(payload.getByteSize()).toBe(9);
+	});
+
+	it("should serialize the payload correctly", () => {
+		const payload = new GameMessagePayload();
+		const buffer = Buffer.from("test data");
+		payload.deserialize(buffer);
+
+		expect(payload.serialize()).toEqual(buffer);
+	});
+
+	it("should deserialize the payload correctly", () => {
+		const payload = new GameMessagePayload();
+		const buffer = Buffer.from("test data");
+		payload.deserialize(buffer);
+
+		expect(payload.serialize()).toEqual(buffer);
+	});
+
+	it("should correctly indicate if the payload is encrypted", () => {
+		const payload = new GameMessagePayload();
+
+		expect(payload.isPayloadEncrypted()).toBe(false);
+
+		payload.setPayloadEncryption(true);
+		expect(payload.isPayloadEncrypted()).toBe(true);
+	});
+
+	it("should set the payload encryption correctly", () => {
+		const payload = new GameMessagePayload();
+
+		payload.setPayloadEncryption(true);
+		expect(payload.isPayloadEncrypted()).toBe(true);
+
+		payload.setPayloadEncryption(false);
+		expect(payload.isPayloadEncrypted()).toBe(false);
+	});
+});