We really wanted to emphasize player choice a lot more," he said. "We really wanted to tackle more of a branching storyline, [a] branching campaign; allow players to choose things like their own technology. And as we kind of developed [the game], we had to figure out how all there? How many missions do we actually need to tell an interesting story and what's the player's critical path to it? We have to make all of these tough design decisions about how this was going to work for us?"

"What we realized that whenever we put in the similar amount of content that we put in our previous games--as far as missions, characters, cinematics, things like that--it never really felt like the player had enough choice; it wasn't really living up to what our hopes and dreams were at first. That's when we realized we're kind of at this fork in the road. We really have to make a choice. Do we want to back away from those philosophies? Or do we maybe just delay the game a lot and kind of do a little bit more? Or do we go for it?"

The original StarCraft, according to Pardo, had 32 missions; 12 for the Terrans, and 10 each for the Zerg and the Protoss. According to Blizzard, each of these StarCraft II games will consist of more than 30 missions.