After the purchase, you will be given a username and password from the microsoft account. - After installation, you can play online. - Mail and password can not be changed. (your account remains forever) INSTALLATION: 1. Make sure you have Microsoft Store on your computer (windows). 2. Go to the Microsoft Store using the username and password given after purchase. 3. Search the Microsoft Store for the game: Minecraft for Windows 10 4. Click the "Install" button