I'm playing campaign currently, and IMO it is interesting. Each mission so far is not only a different map, but different goals and settings are shown, each mission shows something new. I'm not a RTS fan, but this game I shall finish (I was to lame to finish the first SC)
I really like the storyline made by Blizzard, I enjoyed Warcraft III, and Starcraft currently is not worse, but I'm at 1/3 of completion, so my opinion may change.
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