Based on a game by Alice Soft.

What are some suggestions for any good anime series?

I’ll let everyone else name the many other ones.
One of the big ones you need to see is Fullmetal Alchemist: Brotherhood.
There are actually 2 versions of this anime.
The original Fullmetal Alchemist is also good, but I don’t like the ending nearly as much because it was made before the manga ended.
Fullmetal Alchemist: Brotherhood followed the manga almost page for page, and they poured a massive budget into the remake, so its on the same caliber as AOT. The idea behind FMA: Brotherhood is that, alchemy, something young Edward and Alphonse Elric started teaching themselves at a young age, is actually a very large part of the world they live in.
It’s the most prominent in the military where its become weaponized.
As the story progresses and a tragic and traumatizing event forces Ed to join the military as a state alchemist, he beings to realize that alchemy is a lot more dangerous and a lot more ancient than he ever believed.
Uncovering an ancient plot, he puts his trust in a select few, and they fight back.