Good news for those of you who’ve yet to try out StarCraft II at all. There’s a free demo now available from battlenet here.
The demo consists of
“full access to the first three missions of the single-player campaign, as well as unlimited access to skirmish mode as the terrans versus an A.I. opponent, the free demo gives you an introduction to the cinematic storytelling and fast-paced gameplay of StarCraft II.”
Well worth checking out, if only to see if your PC can run it properly.