I am thinking about buying Trainz 2019 but at present have Trainz 2016 installed on my computer. Should I uninstall 2016 or leave it as it is? My concern is that there could be a conflict between the two at some point when working with 2019. Not worried about the space they take up on my HD because I have 2TB HD and a 500 SSD which I work off of at present and my computer is nothing more than a toy so using up space is a minor problem. I also have an Alienware laptop I would also like to install 2019 on so would I have to buy 2019 twice or could I install 2019 on both of my computers with one purchase? Thanks to all for any help given.