Uhm. Money grabber.
Back in the late 1990s & early 2000s, I used to play Age of Empires & Age of Mythology.
This is just a poor comparison of the good old games.
Yes, they were expensive to buy back then, but once you bought the AoM, you did not have to spend any money. Those games were fun to play with. They kept me entertained for hours - heck, even days.
With this game, even though is "FREE", you have to spend good $$$ in order to advance.
Bond1970007 about
Age of Empires: Castle Siege