Update:

Totally addicting, however, chaos mode is ridiculous! I have all my towns but cant seem to complete all the chaos modes because some trains come out at the same time as other trains are going in (the same track) so of course they will collide every time that happens. How is that possible to even accomplish?! Please make it fair! Please make it where a train cant come out of a track when another train crosses or passes more than halfway (towards each other) on the same track...then its still hard but doable.

Update: they have made it so impossibly difficult that it isnt fun anymore!

Anita Run about Train Conductor World