Left 4 Dead to force you to switch sides between maps?

[BenKenobi88]

thekitchensink said:
The video wasn't that interesting--only a few seconds of boss gameplay, with the rest mostly being from the human perspective we've seen so many times before. Also, I saw zombie footage on IGN months ago.

There is no difference between Campaign and Versus--it'll be similar in that way to Perfect Dark's Counter-Operative mode, where it's the same continuous campaign with enemy players controlling the enemies.

No, there is a difference between Campaign and Versus.  In Campaign mode, the AI Director makes your game smooth...with crazy intense parts and slower scary parts.

The Director makes Versus all crazy all the time, so it's much harder for the Survivors.  I'm guessing that will make the games shorter.