Stellaris

I am very glad that at one time I was already a mature enough person to buy the game and not download it. But directly about the game itself:

First, when playing Stellaris, you risk disappearing for a week. Civilization, heroes of sword and sorcery (albeit to a lesser extent) also mercilessly devoured our time, but if in these games such an effect was mainly achieved through games with a friend or a random player online, in Stellaris you will disappear even without multiplayer, because you can’t just leave everything to chance and move away, events happen constantly and you need to sit and react to them.

Second - buy the game already and go play, because there you can create your own species/race/state/culture/religion/fleet/ships/history.