Despite this is TRAIN Fever, to get the ultimate achievement on hard difficulty, DON’T BUILD TRAINS. Build bus, tram and truck lines. They make easy profit, and expand fast on a large map. Connect each city with all it’s close neighbours. You’ll have many dozens of bus lines making each easily 100K – 1M per line! With some clever cargo and inner city tram lines, you’re half way victory.

But don’t build trains.