diff --git a/apps/server/src/entities/Player.ts b/apps/server/src/entities/Player.ts
new file mode 100644
index 0000000..da5e973
--- /dev/null
+++ b/apps/server/src/entities/Player.ts
@@ -0,0 +1,15 @@
+// src/entities/Player.ts
+export class Player {
+  public id: string;
+  public x: number;
+  public y: number;
+  public color: string;
+
+  constructor(id: string) {
+    this.id = id;
+    this.x = 0;
+    this.y = 0;
+    // ランダムな色をつけるとおしゃれです
+    this.color = '#' + Math.floor(Math.random()*16777215).toString(16);
+  }
+}
\ No newline at end of file