6) Total War™: ROME II - Emperor Edition

Total War: ROME II – Find a Way Trailer – US

Set during the ascension of the Roman Empire, Rome 2 encompasses the punic wars, and minor conflicts during that period. Featuring battles where each soldier became a real physical object; and battles where naval and land units are both fighting.

While it came out bugged and flawed, the patches have fixed many of the problems.

Sieges are back.

A more realistic version of Asterix and Obelix

5) X-com 2 (with long war 2 mod)

Official XCOM 2 E3 2015 Gameplay

A squad based tactics game where Aliens control the earth and you are the leader of the resistance, trying to get rid of a much more advanced foe. You control a flying base form where you launch your raids to save mankind. An unforgiving game on it's own, what makes it applicable to this list is the official long war 2 mod for it. This ramps up the difficulty and turns the game into more of a strategy game, where long-term thinking is essential.

You can customize each squad member

The aliens are not messing around.