When you get Train Simulator when new versions you automatically get updated engine. but have to purchase the new game to get the routes it adds. If you already have the routes or don't want them though you still get upgraded, so ts2012 became ts2013, and now ts2014 is coming out.....
If ya wants adrenaline, stick to BF3.....but somedays I want relaxing, and something to chill with while drinking Scotch/SourMash and it's cheaper then a model train hobby....
[youtube]http://www.youtube.com/watch?v=P0zhD37Y5Ms[/youtube]