diff --git a/src/core/game/Ping.ts b/src/core/game/Ping.ts
new file mode 100644
index 000000000..81e3d4147
--- /dev/null
+++ b/src/core/game/Ping.ts
@@ -0,0 +1,17 @@
+import { TileRef } from "./GameMap";
+
+export enum PingType {
+  Attack,
+  Retreat,
+  Defend,
+  WatchOut,
+}
+
+export class Ping {
+  constructor(
+    public type: PingType,
+    public tile: TileRef,
+  ) {}
+}
+
+export class PingPlacedEvent extends Ping {}