diff --git a/src-tauri/Cargo.lock b/src-tauri/Cargo.lock
index 2c2aa17..229f53a 100644
--- a/src-tauri/Cargo.lock
+++ b/src-tauri/Cargo.lock
@@ -2172,6 +2172,12 @@ dependencies = [
  "selectors 0.24.0",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
 name = "leb128fmt"
 version = "0.1.0"
@@ -2329,7 +2335,6 @@ dependencies = [
  "lighty-java",
  "lighty-launch",
  "lighty-loaders",
- "lighty-tauri",
  "lighty-version",
  "once_cell",
  "tokio",
@@ -2357,28 +2362,6 @@ dependencies = [
  "zip",
 ]
 
-[[package]]
-name = "lighty-tauri"
-version = "0.8.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d3842cdcd5530f59351a3d6f0a9d3d57e76b010d456427e789ad479a7c2272d"
-dependencies = [
- "directories",
- "lighty-auth",
- "lighty-core",
- "lighty-java",
- "lighty-launch",
- "lighty-loaders",
- "lighty-version",
- "once_cell",
- "serde",
- "serde_json",
- "tauri",
- "thiserror 2.0.18",
- "tokio",
- "tracing",
-]
-
 [[package]]
 name = "lighty-version"
 version = "0.8.6"
@@ -2616,6 +2599,15 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72ef4a56884ca558e5ddb05a1d1e7e1bfd9a68d9ed024c21704cc98872dae1bb"
 
+[[package]]
+name = "nu-ansi-term"
+version = "0.50.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
+dependencies = [
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.2.1"
@@ -3860,12 +3852,16 @@ dependencies = [
 name = "saturn-launcher"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
+ "directories",
  "lighty-launcher",
+ "once_cell",
  "serde",
  "serde_json",
  "tauri",
  "tauri-build",
  "tauri-plugin-opener",
+ "tracing-subscriber",
 ]
 
 [[package]]
@@ -4173,6 +4169,15 @@ dependencies = [
  "digest",
 ]
 
+[[package]]
+name = "sharded-slab"
+version = "0.1.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f40ca3c46823713e0d4209592e8d6e826aa57e928f09752619fc696c499637f6"
+dependencies = [
+ "lazy_static",
+]
+
 [[package]]
 name = "shlex"
 version = "1.3.0"
@@ -4792,6 +4797,15 @@ dependencies = [
  "syn 2.0.117",
 ]
 
+[[package]]
+name = "thread_local"
+version = "1.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f60246a4944f24f6e018aa17cdeffb7818b76356965d03b07d6a9886e8962185"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "time"
 version = "0.3.47"
@@ -5110,6 +5124,32 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "db97caf9d906fbde555dd62fa95ddba9eecfd14cb388e4f491a66d74cd5fb79a"
 dependencies = [
  "once_cell",
+ "valuable",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee855f1f400bd0e5c02d150ae5de3840039a3f54b025156404e34c23c03f47c3"
+dependencies = [
+ "log",
+ "once_cell",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb7f578e5945fb242538965c2d0b04418d38ec25c79d160cd279bf0731c8d319"
+dependencies = [
+ "nu-ansi-term",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing-core",
+ "tracing-log",
 ]
 
 [[package]]
@@ -5277,6 +5317,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "valuable"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
+
 [[package]]
 name = "version-compare"
 version = "0.2.1"
diff --git a/src-tauri/Cargo.toml b/src-tauri/Cargo.toml
index de8891c..0fab6b9 100644
--- a/src-tauri/Cargo.toml
+++ b/src-tauri/Cargo.toml
@@ -22,4 +22,8 @@ tauri = { version = "2", features = [] }
 tauri-plugin-opener = "2"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
-lighty-launcher = { version = "0.8.6", features = ["fabric", "tauri-commands"] }
+lighty-launcher = { version = "0.8.6", features = ["fabric"] }
+directories = "6.0"
+once_cell = "1.21"
+tracing-subscriber = "0.3"
+anyhow = "1.0"
diff --git a/src-tauri/src/launcher.rs b/src-tauri/src/launcher.rs
new file mode 100644
index 0000000..c7917e2
--- /dev/null
+++ b/src-tauri/src/launcher.rs
@@ -0,0 +1,46 @@
+use directories::ProjectDirs;
+use lighty_launcher::{
+    auth::{Authenticator, OfflineAuth},
+    java::JavaDistribution,
+    launch::Launch,
+    loaders::Loader,
+    version::VersionBuilder,
+};
+use once_cell::sync::Lazy;
+
+static LAUNCHER_DIR: Lazy<ProjectDirs> = Lazy::new(|| {
+    ProjectDirs::from("org", "SaturnLauncher", "SaturnLauncher")
+        .expect("Failed to create project directories")
+});
+
+#[tauri::command]
+pub async fn launch() -> Result<(), String> {
+    println!("Launcher directory: {:?}", LAUNCHER_DIR);
+
+    tracing_subscriber::fmt::init();
+
+    // Authenticate
+    let mut auth = OfflineAuth::new("PlayerName");
+    let profile = auth
+        .authenticate()
+        .await
+        .map_err(|e| format!("Authentication failed: {}", e))?;
+
+    // Create version instance
+    let mut version = VersionBuilder::new(
+        "vanilla-1.21.1",
+        Loader::Vanilla,
+        "",
+        "1.21.1",
+        &LAUNCHER_DIR,
+    );
+
+    // Launch the game
+    version
+        .launch(&profile, JavaDistribution::Temurin)
+        .run()
+        .await
+        .map_err(|e| format!("Launch failed: {}", e))?;
+
+    Ok(())
+}
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index fed28c7..92aa0b2 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -1,4 +1,5 @@
 pub mod commands;
+pub mod launcher;
 
 use serde::{Deserialize, Serialize};
 use std::sync::Mutex;
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index b4375a0..64924ca 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -1,7 +1,6 @@
 // Prevents additional console window on Windows in release, DO NOT REMOVE!!
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
 
-use lighty_launcher::tauri::lighty_plugin;
 use saturn_launcher_lib::{commands::*, AppState};
 use std::sync::Mutex;
 
@@ -9,14 +8,14 @@ use std::sync::Mutex;
 fn main() {
     tauri::Builder::default()
         .plugin(tauri_plugin_opener::init())
-        .plugin(lighty_plugin())
         .manage(Mutex::new(AppState::default()))
         .invoke_handler(tauri::generate_handler![
             get_installed_mods,
             toggle_mod,
             install_mod,
             get_settings,
-            update_settings
+            update_settings,
+            saturn_launcher_lib::launcher::launch
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
diff --git a/src/App.tsx b/src/App.tsx
index 138eefe..c86fdeb 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -8,7 +8,7 @@ import {
   User,
   LogOut,
 } from "lucide-react";
-import { getVersions } from "./services/LauncherService";
+import { getVersions } from "./services/SaturnApi";
 import { clsx, type ClassValue } from "clsx";
 import { twMerge } from "tailwind-merge";
 import Logo from "@/assets/logo.png";
diff --git a/src/components/ModsSection.tsx b/src/components/ModsSection.tsx
index acf2183..7a9cf0e 100644
--- a/src/components/ModsSection.tsx
+++ b/src/components/ModsSection.tsx
@@ -14,7 +14,7 @@ import {
   getVersions,
   toggleMod,
   installMod,
-} from "../services/LauncherService";
+} from "../services/SaturnApi";
 import { clsx, type ClassValue } from "clsx";
 import { twMerge } from "tailwind-merge";
 import { motion, AnimatePresence } from "framer-motion";
diff --git a/src/components/PlaySection.tsx b/src/components/PlaySection.tsx
index ab1aac5..990c271 100644
--- a/src/components/PlaySection.tsx
+++ b/src/components/PlaySection.tsx
@@ -1,9 +1,10 @@
 import React, { useEffect, useState } from "react";
 import { Play, Loader2 } from "lucide-react";
-import { launchGame } from "../services/LauncherService";
+// import { launchGame } from "../services/SaturnApi";
 import Bg from "@/assets/bg.png";
 import { listen } from "@tauri-apps/api/event";
 import { GameVersion } from "@/services/Types";
+import { launch } from "@/services/LauncherApi";
 
 interface PlaySectionProps {
   version: GameVersion;
@@ -43,7 +44,7 @@ const PlaySection: React.FC<PlaySectionProps> = ({ version }) => {
           <div className="absolute -inset-1 bg-linear-to-r from-blue-600 to-cyan-500 rounded-lg blur opacity-25 group-hover:opacity-50 transition duration-1000 group-hover:duration-200"></div>
 
           <button
-            onClick={() => launchGame(version.id)}
+            onClick={() => launch()}
             disabled={isLaunching}
             className="relative btn-primary px-16 py-4 text-xl flex items-center gap-3 min-w-60 justify-center"
           >
diff --git a/src/components/SettingsSection.tsx b/src/components/SettingsSection.tsx
index 4d935d3..9fc2ec8 100644
--- a/src/components/SettingsSection.tsx
+++ b/src/components/SettingsSection.tsx
@@ -7,7 +7,7 @@ import {
   Info,
   AlertTriangle,
 } from "lucide-react";
-import { getSettings, updateSettings } from "../services/LauncherService";
+import { getSettings, updateSettings } from "../services/SaturnApi";
 import { motion } from "framer-motion";
 import { LauncherSettings } from "@/services/Types";
 
@@ -118,8 +118,7 @@ const SettingsSection: React.FC = () => {
             <div className="relative w-full mt-2 h-6">
               {[1024, 4096, 8192, 12288, 16384].map((value) => {
                 const percent =
-                  (((value - 1024) / (16384 - 1024)) * 100 - 50) * 0.97 +
-                  50;
+                  (((value - 1024) / (16384 - 1024)) * 100 - 50) * 0.97 + 50;
 
                 return (
                   <span
diff --git a/src/services/LauncherApi.ts b/src/services/LauncherApi.ts
new file mode 100644
index 0000000..6f7f965
--- /dev/null
+++ b/src/services/LauncherApi.ts
@@ -0,0 +1,13 @@
+import { invoke } from "@tauri-apps/api/core";
+
+const clientId = "74909cec-49b6-4fee-aa60-1b2a57ef72e1";
+
+export async function authenticate() {
+  return await invoke("plugin:lighty-launcher|authenticate", {
+    client_id: clientId,
+  });
+}
+
+export async function launch() {
+  return await invoke("launch");
+}
diff --git a/src/services/LauncherService.ts b/src/services/SaturnApi.ts
similarity index 88%
rename from src/services/LauncherService.ts
rename to src/services/SaturnApi.ts
index 9a3a0a2..82b5ed9 100644
--- a/src/services/LauncherService.ts
+++ b/src/services/SaturnApi.ts
@@ -75,11 +75,3 @@ export async function updateSettings(
 ): Promise<void> {
   await invoke("update_settings", { newSettings });
 }
-
-// --- Launch ---
-export async function launchGame(
-  versionId: string,
-): Promise<{ success: boolean; message: string }> {
-  await invoke("plugin:lighty-launcher|launch", { versionId });
-  return await invoke("launch_game", { versionId });
-}