A four player game with 4 experienced players Dave,Old Geoff,Young Jeff and Simon.
After the initial auction Geoff had companies 1,6,7,9 Jeff had 5,8,11,14 Dave had 2,4,12 and i had 3,10,12,13.
Every one had their own areas to work in Geoff(Berlin),Jeff(Italy),Dave(Paris north)and Simon(Paris south).
After the first set of operating rounds Simon merged companies 3 and 13 at 90,Dave merged 2 and 12 at 82,Jeff merged 5 and 8 at 82 while Geoff could not form a company as he had no links between his minors.
In the next OR all bar 1 three trains were bought and Geoff got his connection between 7 and 6.
In the next SDR Geoff launched his first company with the merger of 7 and 6 while Simon chose not to form a second company and invested in the good paying shares.At the end of the SDR Simon had an small advantage with one more share than the others.
In the next set of OR`s Geoff bought the last 3 train and Simon the first 4 train.
The last four companies were formed in the next SDR Geoff from 7,Dave from 4,Jeff from 11 and Simon from 12.At the end of the SDR Simon had reached the certificate limit while the other players were 3 below.
The mid game saw the companies trying to avoid the poison 4 train whilst building up routes for the end game.Dave`s companies had the Paris-Berlin route,Jeff had Rome-Vienna,Geoff had Berlin-London and Berlin-Vienna while Simon had Paris-Berlin via the south.Earnings at this stage ranged between 24 and 44(the higher values for the companies with multiple trains)
Geoff finally bit the bullet to buy the 4 and a 5 train which saw the companies each buying a permanent train.
The last set of OR`s saw earnings between 28 and 62 and the bank breaking by less than 100.
The final scores saw 500 between players in the order
Simon,Dave,Jeff and Geoff.

How many of the extra trains did you use? Gameplay very much depends on the number of extra 3s and if the extra 4 is used.