[citation][nom]KyleSTL[/nom]As much as I hate to admit it, games like Guitar Hero and Rock Band actually translate better into brain stimulation than FPSs. Puzzle and RPG games (at least one's with some kind of strategy involved, mostly turn-based), I'm sure, are probably good brain stimulants as well.[/citation]
I completely disagree with that but you do learn/employ a different set of skills. Playing games like left for dead is more than killing zombies, you have to work well and communicate well with your team toward a common goal, you also have to keep a keen sense of sight and hearing to find hidden items and hear enemies. There is also the strategy factor in them, some could argue that it is far more nuanced than any puzzle game.