If you do not have an active internet connection, the game should naturally offer an offline option. If you need to force it while online, follow these steps: Blizzard Forums Disconnect Internet
Blizzard does not publish checksums. However, the official offline mode’s behavior has been verified by hundreds of users on Reddit’s r/starcraft and the Blizzard forums. The method in Part 2 is confirmed working as of June 2025 .
Eli closed his laptop, the installer safely tucked away, and walked downstairs to join his friends for another offline match. The verified build waited in his pocket, not as a relic but as a promise: the game could still belong to the players, one checksum at a time.
: You must have created at least one StarCraft II character on your account while online.