[Puzzle] One of my most favorite games...

Hey Steamgifters,

I'm a gamer for about 20 years now and of course I've played a lot of good and aswell bad games in that period of time.
One of my favorite games is the prize of todays puzzle. I remeber to ask my parents to go with me to another city, about 30 minutes with the car, to buy it. I was reading the game description for maybe three times while driving back. Great game, great atmosphere and gameplay.

Feel free to comment and write about your favorite games, I'll read them all.

Rules should be already known:

Do not leak, post answers, suggest hints, or directly link to the prize/giveaway.

Aswell, stay classy, affronts etc. won't be tolerated!

YAY!

Hints:

All questions, except for the last one, have 3 answers.

Q1: think about the political situation back then. in present times they are 3 separate countries, but in 1911 they might have been one.

Q1: these 3 countries are very well known especially in terms of computer technologie.

Q1: Empires used to have them. Two of the three countries were these "things".

Q2: It's not Yokohama

Q2: One was nuked, one was shaked and one has a known castle

Q3-5: easy to google them, but you won't find the answers in the first sentence of a wikipedia article.