diff --git a/register.php b/register.php
new file mode 100644
index 0000000..3b20473
--- /dev/null
+++ b/register.php
@@ -0,0 +1,50 @@
+<?php
+if ($_SERVER["REQUEST_METHOD"] === "POST") {
+
+    $username = $_POST["username"];
+    $email = $_POST["email"];
+    $password = $_POST["password"];
+    $confirm = $_POST["confirm"];
+
+    if (!$username || !$email || !$password || !$confirm) {
+        echo "Semua field wajib diisi";
+        exit;
+    }
+
+    if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
+        echo "Email tidak valid";
+        exit;
+    }
+
+    if ($password !== $confirm) {
+        echo "Password tidak cocok";
+        exit;
+    }
+
+    // contoh simpan ke file JSON
+    $file = "users.json";
+    $users = file_exists($file) ? json_decode(file_get_contents($file), true) : [];
+
+    foreach ($users as $u) {
+        if ($u["username"] === $username) {
+            echo "Username sudah digunakan";
+            exit;
+        }
+        if ($u["email"] === $email) {
+            echo "Email sudah digunakan";
+            exit;
+        }
+    }
+
+    $users[] = [
+        "id" => time(),
+        "username" => $username,
+        "email" => $email,
+        "password" => $password,
+        "role" => "player"
+    ];
+
+    file_put_contents($file, json_encode($users, JSON_PRETTY_PRINT));
+    echo "success";
+}
+?>