This DLC is quite interesting from a historical perspective but its main problem is the fact that the Chinese presence is mainly noticable in the regions near China (India and the far East).

With Hearts of Iron 4 Paradox really tries to update this classic game and mostly succeeds. Some of the changes are a bit controversial for some players while the game (like all paradox games) will keep evolving with the DLC's however it seems like this will be a far better effort than the mediocre Hearts of Iron 3. Of course some of the usual problems persist like A.I naval invasions which are as usual problematic and although theoretically you can play as any country in the world the fact that only a dozen countries have their own national focus trees(as of now at least) makes playing the other ones a bland and generic experiance.

Although this DLC does add some elements to the main game ( golden eras ) which are quite useful its main strength is the attention it pays to the areas of the far east especially Ming China and Japan. If you're interested in playing a country in that part of the world then this DLC is certainly a must buy , however if you're not then you can certainly wait for a major sale to buy it at a steep discount.

If you really liked Tropico 5 and are interested in the premise of this DLC then you can't go wrong by buying it especially during a sale.

Although this DLC is certainly more useful than the Plantoids one or the latest one about the Humanoid ships it still only adds stuff concerning robotic-cyborg empires. If you' re not interested in playing as one of those things then you really shouldn't buy this one unless its on a big sale.

This game may look a bit like the famous Railroad Tycoon but it certainly isn't a copy. You do transfer trade goods and passengers from station to station but you don't build the train tracks yourself( would have been nice if you could do such a thing). Also , you can hire bodyguards to guard your train from attacks during the journey. All in all an interesting little game but if you're hoping for a modern Railroad Tycoon you'll have to look elsewhere.

A very interesting addition to the classic Crusader Kings 2 it allows you to play as the mongol hordes that "visited" Europe during the 13th century.

Historically speaking epidemics and diseases were indeed a big thing in the Middle Ages so adding them in Crusader Kings is not unreasonable. However the elements this DLC adds are not that crucial and paying full price for it is not advisable. Wait for a sale.