While many seek the "Complete Collection" for all campaigns, the official version of is partially free-to-play on Battle.net : Wings of Liberty campaign is completely free. Multiplayer (Unranked and Ranked) is free to access.
: ElAmigos versions are known for significantly reduced file sizes compared to the official Battle.net installation and simple "install-and-play" setups that don't require an active internet connection for single-player. System Requirements While many seek the "Complete Collection" for all