diff --git a/backend.py b/backend.py
index f826e78..acbcb26 100644
--- a/backend.py
+++ b/backend.py
@@ -1,4 +1,102 @@
 import platform
 import requests
+from os import popen
+from time import sleep
+import re
+import pathlib
 
-PATH: str
+def getArch() -> str :
+    arch = platform.machine()
+
+    if arch in ['x86_64','AMD64'] :
+        return 'x86_64'
+    elif arch in ['arm64','aarch64'] :
+        return 'arm64'
+
+APP_PATH: str
+
+TOKEN: str
+
+OS = platform.system()
+
+ARCH = getArch()
+
+def requestGitHubInfo() -> list :
+    if len(TOKEN) > 0 :
+        response = requests.get("https://api.github.com/repos/godotengine/godot/releases?per_page=100",headers={"Accept":"application/vnd.github+json","Authorization":f"Bearer {TOKEN}","X-GitHub-Api-Version":"2022-11-28"})
+    else :
+        return []
+
+    return response.json()
+
+# Get the versions of the Godot Engine and sort them from latest to oldest
+
+def verOptions() -> list:
+    tag_list = []
+    response = requestGitHubInfo()
+
+    for i in response :
+       tag_list.append(i['tag_name'])
+    
+    tag_list.sort(reverse=True)
+
+    tag_list.pop()
+
+    return tag_list
+
+def downloadGodot(cur_version: str) -> None :
+
+    response = requestGitHubInfo()
+
+    VERSION = cur_version
+
+    response.sort(key=lambda x: x['tag_name'],reverse=True)
+
+    ASSETS = getAssets(response, VERSION)
+
+    if ASSETS != [] :
+        for asset in ASSETS :
+            if OS == 'Linux' :
+                regex = re.findall("linux|x11",asset['name']) + re.findall("x86_64|64",asset['name'])
+                if re.findall("server|headless",asset['name']) == [] and regex in [['linux','x86_64'],['x11','64']] :#(asset['name'].find('linux') > 0 or asset['name'].find('x11') > 0) and (asset['name'].find(ARCH) > 0 or asset['name'].find('64') > 0) and asset['name'].find('server') == -1:
+                    popen(f"curl -Lo {APP_PATH}/Godot.zip {asset['browser_download_url']}")
+                    sleep(10)
+                    popen(f"unzip -d {APP_PATH} {APP_PATH}/Godot.zip")
+                    sleep(10)
+                    popen(f"rm -f {APP_PATH}/Godot.zip")
+            elif OS == 'Windows' :
+                if 'arm64' in re.findall('win',asset['name']) + re.findall('arm64',asset['name']) :
+                    popen(f"curl -Lo {APP_PATH}/Godot.zip {asset['browser_download_url']}")
+                    popen(f"tar -xf {APP_PATH}/Godot.zip -C {APP_PATH}")
+                    popen(f"DEL {APP_PATH}/Godot.zip")
+                else :
+                    popen(f"curl -Lo {APP_PATH}/Godot.zip {asset['browser_download_url']}")
+                    popen(f"tar -xf {APP_PATH}/Godot.zip -C {APP_PATH}")
+                    popen(f"DEL {APP_PATH}/Godot.zip")
+            else :
+                raise Exception("Incompatible OS.")
+    else :
+        raise Exception("No fitting assets found.")
+
+def getAssets(response: list, tag: str) -> list :
+
+    for i in response :
+        if i['tag_name'] == tag :
+            return i['assets']
+        else :
+            continue
+    
+    return []
+
+def launch(cur_version: str) -> int :
+
+    VERSION = cur_version.split('-')[0]
+
+    appDir = pathlib.Path(APP_PATH)
+
+    for i in appDir.iterdir() :
+        if re.findall(VERSION,i.name) == [VERSION] :
+            popen(f"{APP_PATH}/{i.name}")
+            return 0
+    
+    return 1
\ No newline at end of file
diff --git a/main.py b/main.py
index 725c046..7fb089e 100644
--- a/main.py
+++ b/main.py
@@ -1,20 +1,19 @@
 import tkinter as tk
 import tkinter.ttk as ttk
-import platform
-import requests
+import backend
 
-def verOptions() -> list:
-    tag_list = []
-    response = requests.get("https://api.github.com/repos/godotengine/godot/releases?per_page=100",headers={"Accept":"application/vnd.github+json","Authorization":"Bearer {TOKEN}","X-GitHub-Api-Version":"2022-11-28"})
+def tryDownload() -> None :
+   backend.downloadGodot(strvar.get())
 
-    for i in response.json() :
-       tag_list.append(i['tag_name'])
-    
-    tag_list.sort(reverse=True)
+def tryLaunch() -> None :
+   if backend.launch(strvar.get()) == 0 :
+      print("Launched successfully")
+   else :
+      print("Godot couldn't be launched")
 
-    return tag_list
 
-CUR_VERSION = verOptions()
+
+CUR_VERSION = backend.verOptions()
 
 FRONTEND = tk.Tk()
 FRONTEND.geometry("650x480")
@@ -25,8 +24,8 @@
 ttk.Style().map("M.TCombobox",background=[('active','#aaa')])
 
 CANVAS = tk.Canvas(FRONTEND,bg="#4811a9")
-LAUNCH_BUTTON = tk.Button(CANVAS,activebackground="#aaa",bg="#888",text="Launch")
-DOWNLOAD_BUTTON = tk.Button(CANVAS,activebackground="#aaa",bg="#888",text="Download")
+LAUNCH_BUTTON = tk.Button(CANVAS,activebackground="#aaa",bg="#888",text="Launch",command=tryLaunch)
+DOWNLOAD_BUTTON = tk.Button(CANVAS,activebackground="#aaa",bg="#888",text="Download",command=tryDownload)
 
 strvar = tk.StringVar(CANVAS,CUR_VERSION[0])
 VERSION_MENU = ttk.Combobox(master=CANVAS,textvariable=strvar,values=CUR_VERSION,state='readonly',font="Sans 12",style='M.TCombobox')