I intent on implementing NPCs walking around in certains times of the day, and street and sign lights that would change depending on the time of the day, and also clouds that would move and slowly change their form
Deppending on the time of the day, weather and place the player is at, certain playable events would be available.
I also want to implement a relaxing train ride to see a nice scrolling background, but some missions would involve the player having to climb to the top of the train to fight enemies that would fly or drive around it.