Game Theory: When is it time to give a free game your money?

Every Friday, A.V. Club staffers kick off the weekend by taking a look at the world of gaming, diving in to the ideas that underpin the hobby we love with a bit of Game Theory. We’ll sound off in the space above, and invite you to respond down in the comments, telling us what you’re playing this weekend, and what theories it’s got you kicking around.

One of the weird quirks of modern video game design is that you sometimes have a surprisingly large amount of control over how much you pay for your games.