Completely unrelated, but... The story was ofte a little hard to follow when I was a kid, but using a dictionary I was able to not just understand and progress throughout the game, but I also learned a lot of English in the process. It all started with Transport Tycoon Deluxe, then Age of Empires. But it was with Baldur's Gate things really started to make sense. Because of these games I was reading and sort of speak…
I played Baldur's Gate and barely understood the plot. A few years later, I eventually got to Planescape: Torment and actually managed to understand it.
If you love TTD, you should check out http://www.openttd.org/en/ if you haven't already.