Age of Empires
Age of Empires is a strategy game franchise now as old of some of the empires it includes.
If you are a total nerd that actually read his or her history book, this is the game for you. It might help you as a LARPer in dressing properly and which weapons to carry around. However, the game is more of a total immersion thing where you can block out the world and assholes nagging you to do things with actual humans. All your money will go to computer hardware and candy bars so you can play the game 24/7. But you will have the last laugh when you get that high-paying job involving how to grow crops in the Persian Empire.
Age of Empires is a perfect game for OCD types with the crying need to micromanage. Forget to send your army on regular dental visits and pay for them, and your armies are incapacitated by cavities and your lands will be overrun by Huns. Forget to give your people enough toilet paper and they will revolt and burn everything down. And you have to remember to do thousands of things like that over and over and over and over and over and over again. Otherwise, you lose, buckwheat.
The game has a truly strange game engine. It does not cheat so that you actually have a chance to win after getting in deep after investing 200+ hours in a single game. Of course, the slightest error early on cannot be undone so Age of Empires allows you to pwn yourself over and over and over and over and over and over.