Half-Life 3...is it Left 4 Dead?

[Great Rumbler]

I don't get why people are still playing Left 4 Dead that much. It's a co-op game. Once you finish the campaign, what else is there? I'd think interest would have dropped sharply at that point.

There's six different modes, including survival [where you try not to get killed for as long as possible] and team versus.

But the more noteworthy stat is that more than 100,000 people are still playing Counter-Strike after 12 years.