diff --git a/README.md b/README.md
index 056b2ba..e84b2e9 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,7 @@ This is a wrapper script for Linux that launches `xivlauncher-core` (Native or F
 
 ## Features
 
+- **Auto-Installation**: Automatically downloads and installs XIVLauncher if it's missing (using Flatpak or AUR depending on your OS).
 - **Auto-Detection**: Automatically detects if you are using the native `xivlauncher-core` (Arch/AUR) or the Flatpak version.
 - **OTP Injection**: Generates TOTP codes and sends them to the launcher's internal server.
 - **URL Support**: Accepts standard Base32 secrets OR full `otpauth://` URLs (e.g. from QR codes).
@@ -11,7 +12,7 @@ This is a wrapper script for Linux that launches `xivlauncher-core` (Native or F
 
 ## Installation (Steam Deck / Linux Desktop)
 
-The easiest way to install is using the provided installer script.
+The easiest way to install is using the provided installer script. This script will check if XIVLauncher is installed and install it for you if needed (via Flatpak on SteamOS/Bazzite, or AUR on Arch).
 
 1.  **Run the Installer:**
     ```bash
@@ -21,9 +22,10 @@ The easiest way to install is using the provided installer script.
     When prompted, enter your **TOTP Secret** or paste a full **otpauth:// URL**.
 
 **What it does:**
-*   Creates `~/.config/xivlauncher-wrapper/config.json`.
-*   Installs the wrapper to `~/.local/bin/xivlauncher-wrapper`.
-*   Installs a `.desktop` file to `~/.local/share/applications/` so it appears in your application menu.
+*   **Checks for XIVLauncher:** Installs it via Flatpak or AUR if not found.
+*   **Creates Config:** Creates `~/.config/xivlauncher-wrapper/config.json`.
+*   **Installs Wrapper:** Installs the wrapper to `~/.local/bin/xivlauncher-wrapper`.
+*   **Installs Shortcut:** Installs a `.desktop` file to `~/.local/share/applications/` so it appears in your application menu.
 
 ### Steam Integration (Steam Deck)
 1.  Switch to Desktop Mode.
diff --git a/installer.sh b/installer.sh
index bf2447a..f3bef78 100755
--- a/installer.sh
+++ b/installer.sh
@@ -12,6 +12,122 @@ ICON_DIR="$HOME/.local/share/icons/hicolor/512x512/apps"
 echo "XIVLauncher Wrapper - Installer"
 echo "=========================================="
 
+# ------------------------------------------------------------------
+# Helper Functions
+# ------------------------------------------------------------------
+
+check_xivlauncher_installed() {
+    # Check for Flatpak
+    if command -v flatpak >/dev/null 2>&1; then
+        if flatpak list --app | grep -q "dev.goats.xivlauncher"; then
+            echo "Found XIVLauncher (Flatpak)."
+            return 0
+        fi
+    fi
+
+    # Check for Native
+    if command -v xivlauncher >/dev/null 2>&1 || \
+       command -v xivlauncher-core >/dev/null 2>&1 || \
+       command -v xivlauncher-rb >/dev/null 2>&1; then
+        echo "Found XIVLauncher (Native)."
+        return 0
+    fi
+
+    return 1
+}
+
+install_flatpak_version() {
+    echo "Attempting to install XIVLauncher via Flatpak..."
+    if ! command -v flatpak >/dev/null 2>&1; then
+        echo "Error: 'flatpak' command not found. Cannot install Flatpak version."
+        return 1
+    fi
+
+    # Ensure Flathub repo exists (common issue if not set up)
+    flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+
+    # Install
+    flatpak install -y flathub dev.goats.xivlauncher
+}
+
+install_aur_version() {
+    local helper="$1"
+    echo "Attempting to install XIVLauncher via AUR ($helper)..."
+    
+    # Using xivlauncher-bin for faster installation
+    $helper -S --noconfirm xivlauncher-bin
+}
+
+# ------------------------------------------------------------------
+# Main Logic
+# ------------------------------------------------------------------
+
+echo "Checking for XIVLauncher installation..."
+
+if ! check_xivlauncher_installed; then
+    echo "XIVLauncher not found. Attempting auto-installation..."
+
+    if [ -f "/etc/os-release" ]; then
+        . /etc/os-release
+    fi
+
+    INSTALLED=false
+    OS_ID="${ID:-linux}"
+    OS_LIKE="${ID_LIKE:-}"
+
+    # Logic for SteamOS / Bazzite (Force Flatpak)
+    # Bazzite often identifies as bazzite or fedora but has image-based constraints. 
+    # Usually recommended to use Flatpaks.
+    if [[ "$OS_ID" == "steamos" ]] || [[ "$OS_ID" == "bazzite" ]] || [[ "$OS_ID" == "chimeraos" ]]; then
+        echo "Detected Gaming OS ($OS_ID). Using Flatpak."
+        install_flatpak_version
+        if check_xivlauncher_installed; then INSTALLED=true; fi
+
+    # Logic for Arch / CachyOS (Try AUR, Fallback to Flatpak)
+    elif [[ "$OS_ID" == "arch" ]] || [[ "$OS_ID" == "cachyos" ]] || [[ "$OS_LIKE" == *"arch"* ]]; then
+        echo "Detected Arch-based OS ($OS_ID)."
+        
+        if command -v yay >/dev/null 2>&1; then
+            install_aur_version "yay"
+            INSTALLED=true
+        elif command -v paru >/dev/null 2>&1; then
+            install_aur_version "paru"
+            INSTALLED=true
+        else
+            echo "No AUR helper (yay/paru) found. Falling back to Flatpak."
+            install_flatpak_version
+            if check_xivlauncher_installed; then INSTALLED=true; fi
+        fi
+
+    # Fallback for others
+    else
+        echo "Detected OS: $OS_ID."
+        
+        if command -v flatpak >/dev/null 2>&1; then
+            echo "Flatpak found. Defaulting to Flatpak version."
+            install_flatpak_version
+            if check_xivlauncher_installed; then INSTALLED=true; fi
+        else
+            echo "Flatpak is not installed."
+            echo "We recommend installing XIVLauncher via Flatpak on this distribution."
+            echo "Please install Flatpak using your package manager, then run this script again."
+        fi
+    fi
+
+    # Final Check
+    if ! check_xivlauncher_installed; then
+        echo "WARNING: Automated installation failed or XIVLauncher is still not detected."
+        echo "You will need to install XIVLauncher manually."
+        read -p "Press Enter to continue with wrapper installation anyway..." _
+    else
+        echo "XIVLauncher installed successfully!"
+    fi
+else
+    echo "XIVLauncher is already present."
+fi
+
+echo ""
+
 # Create config directory if it doesn't exist
 mkdir -p "$CONFIG_DIR"