[qubex]

I’m an applied mathematician that eventually became a macroeconomist by way of game theory.

The answer to your question depends very sensibly on what you mean by the terms you use. Certainly various kind of game theoretic solutions to problems are used daily everywhere, from auctions on eBay, to what kind of policies to adopt in government, to how HFT hedge funds choose their positions, to what captains of industry choose to do in their boardrooms.

Since this is a technical environment, I’ll suggest you take a look at Game Theory for Wireless Engineers which applies Game Theory to the environment of self-interested nodes competing to get the best signal they can on a network that is a commons.

http://www.morganclaypool.com/doi/abs/10.2200/S00014ED1V01Y2...

[wenc]

I wasn't too clear in my verbiage, but I guess by "applied" I mean actual game-theoretic computations (what is known as algorithmic game theory) being implemented in code, as opposed to a broad allusions to canonical problems like the Prisoner's Dilemma.

Game Theory for Wireless Engineers is interesting, and I wonder if this is actually being applied in industry, or if it is in the realm of potential application?

[qubex]

Yes, it is really used explicitly by algorithms employed by HFT funds, any system that explicitly or implicitly works with or through auctions, and by cellphone tower management systems. One could also argue that the Byzantine Generals Problem’s solution (the much vaunted blockchain of cryptocurrency lore) is game-theoretic in nature so the whole bitcoin & cetera crowd/craze (spending on your perspectives on the matter) could be considered to be founded upon the application of Game Theory of the algorithmic (computable) variety.