diff --git a/.gitignore b/.gitignore
index cf21122..1dbd420 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,4 +12,5 @@ src/wre/wre.json
 coverage
 .DS_Store
 /public/diagram/lib/*
+/public/game/lib/*
 wollok.log
\ No newline at end of file
diff --git a/package.json b/package.json
index a4ef449..315170d 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   ],
   "main": "./build/src/index.js",
   "scripts": {
-    "preinstall": "sh scripts/download-libs.sh",
+    "preinstall": "node ./scripts/download-libs.js",
     "start": "node ./build/src/index.js",
     "test": "npm run lint && npm run test:unit",
     "test-with-coverage": "npm run lint && nyc --reporter=json --lines 70 npm run test:unit",
diff --git a/public/game/index.html b/public/game/index.html
index 82a1a38..4171cfb 100644
--- a/public/game/index.html
+++ b/public/game/index.html
@@ -2,8 +2,8 @@
 <html>
   <head>
     <meta charset="UTF-8" />
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.2.0/p5.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.5.0/addons/p5.sound.js"></script>
+    <script src="./lib/p5.js"></script>
+    <script src="./lib/p5.sound.js"></script>
     <title>Wollok Game</title>
 
     <script
@@ -27,7 +27,7 @@
       let socket = 1;
     </script>
     <script type="module">
-      import { io } from "https://cdn.socket.io/4.4.1/socket.io.esm.min.js";
+      import { io } from "./lib/socket.io.esm.min.js";
 
       socket = io();
       socket.on("connect", function () {
diff --git a/scripts/download-libs.js b/scripts/download-libs.js
new file mode 100644
index 0000000..7387d8b
--- /dev/null
+++ b/scripts/download-libs.js
@@ -0,0 +1,79 @@
+var path = require("node:path");
+var fs = require("fs");
+var http = require("node:http");
+
+const libsToDownload = [
+  {
+    libDest: "game",
+    libs: [
+      {
+        filename: "p5.js",
+        url: "http://cdnjs.cloudflare.com/ajax/libs/p5.js/1.2.0/p5.js",
+      },
+      {
+        filename: "p5.sound.js",
+        url: "http://cdnjs.cloudflare.com/ajax/libs/p5.js/1.5.0/addons/p5.sound.js",
+      },
+      {
+        filename: "socket.io.esm.min.js",
+        url: "http://cdn.socket.io/4.4.1/socket.io.esm.min.js",
+      },
+      {
+        filename: "socket.io.esm.min.js.map",
+        url: "http://cdn.socket.io/4.4.1/socket.io.esm.min.js.map",
+      },
+    ],
+  },
+  {
+    libDest: "diagram",
+    libs: [
+      {
+        filename: "socket.io.esm.min.js",
+        url: "http://cdn.socket.io/4.4.1/socket.io.esm.min.js",
+      },
+      {
+        filename: "socket.io.esm.min.js.map",
+        url: "http://cdn.socket.io/4.4.1/socket.io.esm.min.js.map",
+      },
+      {
+        filename: "cytoscape.min.js",
+        url: "http://cdnjs.cloudflare.com/ajax/libs/cytoscape/3.26.0/cytoscape.min.js",
+      },
+    ],
+  },
+];
+
+for (const { libDest, libs } of libsToDownload) {
+  console.log(`Downloading ${libDest} libraries`);
+
+  const libFolder = path.resolve(__dirname, "../public", libDest, "lib");
+
+  if (!fs.existsSync(libFolder)) {
+    console.log("Creating lib folder");
+    fs.mkdirSync(libFolder, { recursive: true });
+  }
+
+  for (const { filename, url } of libs) {
+    const dest = path.join(libFolder, filename);
+    if (!fs.existsSync(dest)) {
+      download(url, dest);
+    } else {
+      console.log(`Found local version of ${filename}, skipping download`);
+    }
+  }
+}
+
+function download(url, dest) {
+  console.log(`Downloading from ${url}`);
+  const file = fs.createWriteStream(dest);
+  const options = {};
+  http
+    .get(url, options, (response) => {
+      response.pipe(file);
+      file.on("finish", () => file.close());
+    })
+    .on("error", function (err) {
+      fs.unlink(dest);
+      console.log(err.message);
+    });
+}
diff --git a/scripts/download-libs.sh b/scripts/download-libs.sh
deleted file mode 100755
index 9a47731..0000000
--- a/scripts/download-libs.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-LIB_FOLDER=./public/diagram/lib
-
-# socket.io
-if [ ! -f $LIB_FOLDER/socket.io.esm.min.js ]; then
-     curl -O --create-dirs --output-dir $LIB_FOLDER "https://cdn.socket.io/4.4.1/socket.io.esm.min.js"
-     curl -O --create-dirs --output-dir $LIB_FOLDER "https://cdn.socket.io/4.4.1/socket.io.esm.min.js.map"
-fi
-
-# cytoscape
-if [ ! -f $LIB_FOLDER/cytoscape.min.js ]; then
-    curl -O --create-dirs --output-dir $LIB_FOLDER "https://cdnjs.cloudflare.com/ajax/libs/cytoscape/3.26.0/cytoscape.min.js"
-fi
\ No newline at end of file
diff --git a/tsconfig.json b/tsconfig.json
index bce212b..fa748bb 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -13,6 +13,6 @@
     "esModuleInterop": true,
     "experimentalDecorators": true
   },
-  "include": ["test/**/*.ts", "src/**/*.ts", "public/**/*"],
+  "include": ["test/**/*.ts", "src/**/*.ts"],
   "exclude": ["**/*.js", "node_modules"]
 }
