Seek a stand-alone game that can surpass Civilization 5.

You can try the MOD of Civilization 5, such as superpower (excluding the limitation of urban work scope, a real super city), invincible wisdom of heroes (a relatively perfect hero system) and so on. These can greatly improve the playability.

If you don't care much about the picture, you can also try Civilization IV +mod. Because of the systematic mechanism of the four generations of civilization, its MOD is more powerful and rich. However, due to the age, the localization of Chinese is uneven. RFC, RI, FFH2 and so on, all great. Today's civilized space and satellites originated from the fourth generation MOD.