Summary: I absolutely love this game on Xbox 360. So I figured I would enjoy the PC version while I'm out in the boonies, away from a gaming console. Bad decision. When you order the game, you get a DVD with the game and the much-maligned Steam application.
Summary: This game is quite innovative and potentially excellent. Unfortunately as has become standard in online games, the players are basement dwelling spaz cases who throw tantrums when you make any mistake.
Summary: You can download other campaigns created by people, so just Google "left 4 dead campaigns" and you should find some good campaigns if you get tired of the default ones. But overall, even though I only gave the game four stars, it is simply amazing. Co-op and versus give you endless hours of fun.
Pros: - Graphics are pretty good for the source engine - Co-op play is sweet, provides hours of fun, especially at LAN parties - I can't get over Versus mode. It's so fun to play as the Infected. - The AI Director is real. You get a difference experience every time you play.
Cons: - Single player is nowhere near as fun as multiplayer - Only four campaigns - Campaigns are somewhat short...you could play every campaign all the way through in about 3 hours
Summary: The PC addition of L4D is fine. This is a good change from the original four campaigns. It took several attempts in expert to finish it (that's with a good team). There is no other game the provides this level of dread and anticipation.
Summary: While this DLC doesn't have seem quite as inventive as the original campaigns, it does fill a much needed gap in the L4D roster. Rumors that somehow it changes gameplay mechanics (Such as bot AI, alters your other L4D files) are baseless and ridiculous.
Summary: First of all, this short campaigns offers a little refreshing gameplay. Although not many things change. I also think this campaign is better in versus mode than in singleplayer. I'm sure you'll enjoy some more hours killing infected with this campaign.
Summary: Second biggest update that was promised by L4D, proving that Valve still cares for L4D and not just L4D2. Map is pretty much a sequel of No Mercy, make's sense to play Crash Course after No Mercy. Versus mode's best friend map.