Blizzard have removed the Starcraft II demo from Battle.net, to replace it with a “Starter Edition” – a move which echoes World Of Warcraft’s free 20-level trial. The Starcraft II starter edition allows you try out a bunch of the single player game, and also the Terrans in custom games and single-player vs AI games. More details below.
The first four missions of the StarCraft II: Wings of Liberty single-player campaign, including Mar Sara 1-3 and the choice to embark on Tychus’s first mission or Dr. Hansen’s first mission.
- The first two Challenges: Tactical Command and Covert Ops.
- Access to the terran race in Custom Games and Single-Player vs. AI.
- Access to the following custom maps (map selection may rotate over time):
Xel’Naga Caverns
Shattered Temple
Discord IV
High Orbit
Any campaign progress and achievements you earn while playing StarCraft II: Starter Edition are automatically saved to your Battle.net account, and will carry over should you ever upgrade from the Starter Edition to the full version of StarCraft II: Wings of Liberty.
http://www.rockpapershotgun.com/2011/08 ... %E2%80%9D/
That's a very nice move You can't create a party as a demo user, however I don't know about joining if someone invites you.