MMOGs brag about how many people they have all playing at once, but the real king of concurrency is something completely different.

The Hard Problem is John Scott Tynes' monthly look at really tough issues in game design and his attempts to solve them for the benefit of all humanity. Just making games isn't enough -- we need to make games better.
John Scott Tynes addresses why single player economies collapse and how to fix them.
Let's reinvent the old standard sidequest of action games: The hidden object collect-a-thon.
Too many buttons on controllers makes games inaccessible, and John Scott Tynes offers a solution with Far Cry 2600.
Developers need to stop treating games like they're virtual books and start crafting more dynamic experiences.
This week, John Scott Tynes thinks games could use a little more conversation, but not necessarily any less action.
Games tend to fail when it comes to giving the player real moral dilemmas - here are a few ways to fix that.