Try Stellaris, it is also a grand strategy game about empire building and diplomacy and wars... etc but I love the part that it is all real time, no turn base. And even better: I can pause the game and make a lot of commands, then unpause to see it runs. And able to increase or decrease the game speed.
And this game is on sale on steam very often. It was free last week though.
And this game is on sale on steam very often. It was free last week though.