Best method of procedural environments

Hi guys, I'd like to start making a game of my own but to make sure players dont got bored of a static environment I noticed games like subway surfers/temple run generate environments randomly.

Do you have any advice on how to do this for a novice? I'll be using playmaker or uscript. Thanks!

 

From what I see they generate a serious of 3D tiles that connect together perfectly. When the player is running along they just instantiate the 3D tile in front of the player.

If I was working on one I would keep the player centered and let the world scroll around him. When dealing with 3D coordinates it's best to keep the positions close to the origin or you lose precision.