: A button labeled "Play Offline" or "Enter Offline Mode" should appear. 4. What Can You Play Offline?
: If you have zero internet at home, you can install the game on a different computer (like at a friend's house), copy the entire StarCraft II folder to an external hard drive, and paste it onto your home PC. starcraft 2 offline installer
If you want to skip the launcher entirely (which often tries to update and requires data), you can launch the game directly from its directory. : A button labeled "Play Offline" or "Enter
StarCraft 2 Offline Installer: A Complete Guide to Playing Without Battle.net starcraft 2 offline installer
: Use the SC2Switcher_x64.exe mentioned above.