For those who have looked at Rail Route (see thread https://www.railforums.co.uk/thread...-a-rail-network-simulation-indie-game.163193/ ), and enjoy that style of simulation, an alternative (long established: it's now at 3.9s) is Train Director (seemingly not previously mentioned on this forum), available free at https://www.backerstreet.com/traindir/en/trdireng.php . There are quite a number of scenarios/territories available, mostly Italian but quite a few others - not unfortunately any British - but it is possible to create new ones if you're so inclined. (I believe Train Dispatcher, of which it is a clone, is defunct)