diff --git a/modules/lobbies/actors/lobby_manager.ts b/modules/lobbies/actors/lobby_manager.ts
index f4aaed1d..9b21a911 100644
--- a/modules/lobbies/actors/lobby_manager.ts
+++ b/modules/lobbies/actors/lobby_manager.ts
@@ -27,6 +27,7 @@ import { LobbyBackendServerPortResponse } from "../utils/lobby/backend/server.ts
 import { regionsForBackend } from "../utils/region.ts";
 import * as State from "../utils/lobby_manager/state/mod.ts";
 import * as Rpc from "../utils/lobby_manager/rpc.ts";
+import { assertExists } from "jsr:@std/assert";
 
 const MANAGER_SERVER_TAG = "manager";
 const MANAGER_SERVER_TAG_VALUE = "opengb/lobbies";
@@ -413,11 +414,13 @@ export class Actor extends ActorBase<undefined, State.StateVersioned> {
 	}
 
 	private buildLobbyResponse(
-		_ctx: ActorContext,
+		ctx: ActorContext,
 		lobbyId: string,
 	): LobbyResponse {
 		const lobby = this.getLobby(lobbyId);
+    const lobbyConfig = getLobbyConfig(ctx.config, lobby.tags);
 
+    // Build backend
 		let backend: LobbyBackendResponse;
 		if ("test" in lobby.backend) {
 			backend = { test: {} };
@@ -462,10 +465,16 @@ export class Actor extends ActorBase<undefined, State.StateVersioned> {
 			throw new UnreachableError(lobby.backend);
 		}
 
+    // Get region
+    const allRegions = regionsForBackend(lobbyConfig.backend);
+    const region = allRegions.find(x => x.slug == lobby.region);
+    assertExists(region, "could not find region for lobby");
+
 		return {
 			id: lobby.id,
 			version: lobby.version,
 			tags: lobby.tags,
+      region,
 			createdAt: lobby.createdAt,
 			readyAt: lobby.readyAt,
 			players: Object.keys(lobby.players).length,
diff --git a/modules/lobbies/utils/lobby/mod.ts b/modules/lobbies/utils/lobby/mod.ts
index 243b22b3..b186b7d4 100644
--- a/modules/lobbies/utils/lobby/mod.ts
+++ b/modules/lobbies/utils/lobby/mod.ts
@@ -3,6 +3,7 @@ import { LobbyBackendServerResponse } from "./backend/server.ts";
 import {
 	LobbyBackendLocalDevelopmentResponse,
 } from "./backend/local_development.ts";
+import { Region } from "../region.ts";
 
 /**
  * Check if a lobby with the given tags matches a query.
@@ -21,6 +22,7 @@ export interface LobbyResponse {
 	id: string;
 	version: string;
 	tags: Record<string, string>;
+  region: Region,
 
 	createdAt: number;
 	readyAt?: number;
diff --git a/sandbox/sdk/package.json b/sandbox/sdk/package.json
index fd7d0d7e..4cd34fa6 100644
--- a/sandbox/sdk/package.json
+++ b/sandbox/sdk/package.json
@@ -1,37 +1,37 @@
 {
-  "name": "rivet-sdk",
-  "version": "1.0.0",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/rivet-gg/rivet.git"
-  },
-  "scripts": {
-    "build": "tsup",
-    "prepare": "npm run build"
-  },
+	"name": "rivet-sdk",
+	"version": "1.0.0",
+	"repository": {
+		"type": "git",
+		"url": "https://github.com/rivet-gg/rivet.git"
+	},
+	"scripts": {
+		"build": "tsup",
+		"prepare": "npm run build"
+	},
 
-  "devDependencies": {
-    "typescript": "^4.0 || ^5.0",
-    "tsup": "^8.3.0"
-  },
+	"devDependencies": {
+		"typescript": "^4.0 || ^5.0",
+		"tsup": "^8.3.0"
+	},
 
-  "tsup": {
-    "entry": ["src/index.ts"],
-    "format": ["esm", "cjs", "iife"],
-    "sourcemap": true,
-    "dts": true
-  },
+	"tsup": {
+		"entry": ["src/index.ts"],
+		"format": ["esm", "cjs", "iife"],
+		"sourcemap": true,
+		"dts": true
+	},
 
-  "files": ["dist"],
-  "main": "./dist/index.js",
-  "module": "./dist/index.mjs",
-  "types": "./dist/index.d.ts",
-  "browser": "./dist/index.global.js",
-  "exports": {
-    ".": {
-      "types": "./dist/index.d.ts",
-      "import": "./dist/index.mjs",
-      "require": "./dist/index.js"
-    }
-  }
+	"files": ["dist"],
+	"main": "./dist/index.js",
+	"module": "./dist/index.mjs",
+	"types": "./dist/index.d.ts",
+	"browser": "./dist/index.global.js",
+	"exports": {
+		".": {
+			"types": "./dist/index.d.ts",
+			"import": "./dist/index.mjs",
+			"require": "./dist/index.js"
+		}
+	}
 }
diff --git a/sandbox/sdk/tsconfig.json b/sandbox/sdk/tsconfig.json
index 22c32655..0490d9c1 100644
--- a/sandbox/sdk/tsconfig.json
+++ b/sandbox/sdk/tsconfig.json
@@ -1,14 +1,13 @@
 {
-  "compilerOptions": {
-    "declaration": true,
-    "target": "esnext",
-    "module": "commonjs",
-    "moduleResolution": "node",
-    "allowImportingTsExtensions": true
-  },
-  "exclude": [
-    "dist",
-    "node_modules"
-  ]
+	"compilerOptions": {
+		"declaration": true,
+		"target": "esnext",
+		"module": "commonjs",
+		"moduleResolution": "node",
+		"allowImportingTsExtensions": true
+	},
+	"exclude": [
+		"dist",
+		"node_modules"
+	]
 }
-