Game is an absolute Upgrade from the First game! I love that it really feels like a sequel rather than a copy paste of the first game. It adds a better depth to city building.
It now has a City Free Roam mode where you create an Avatar, buy some clothes for your avatar roam the city if you like, go inside commercial buildings that sells items and you can also go into certain special buildings like services building the city hall, police department and more you can borrow citizens car and unlock for your own while roaming around the city, buy your own house or you cant wait till you unlock your Own Mansion, furnish it and even invite friends (NPCs) for a party.
There is also a Co-Op mode where you can design your city with your friends, but the downside is you have to have the game always open if you made the lobby yourself or if someone has to play in the coop mode.
Downside of the game right now is there are some bugs mostly Visual bugs. Free Roam Driving controls some redesign, Free Roams need optimizing since it's kinda laggy even for some 8Gb+ Ram phones or so i have heard.
But the game is really enjoyable addictive as well, has some quest to improve friendships with NPCs and citizens, Mini Games around the City and a lot more.