I love the game you’ve built, and coming from someone who has played TTD, OpenTTD, simutrans (however buggy that can be at times) for absurd amounts of time, this means you’ve done a great job at creating a similar but more modern atmosphere.

Sure, the game still contains all sorts of minor problems. I can live with these, except for one that is causing me to not fire up the game any more after a few evening-long sessions of getting used to the game mechanics:

The lack of auto-replacement of vehicles makes the game unplayable past year 15 of any halfway serious attempt at line-building. Combined with the high rate of time passing (yes, for me this could also be slower, but that’s less important) you run into this extremely quickly.

To me, at 15 years in I’m barely getting started, which makes it a bit disappointing beyond the great initial experience of 3D freedom and careful planning required to build train lines (gentle slopes), not to mention the great visualization!

Please consider implementing auto-replacement, I don’t even care if it’s realistic – actually I would prefer it not to be with the high rate of time passing. A global checkbox that when enabled essentially resets vehicles’ lifespans while subtracting the cost once more, at the point where it now triggers the popup that the vehicle is old: I can live with it. Whatever takes the least time to implement. To me, and I expect many others, this is a show-stopper because it makes the game Not Fun to the point of it being unplayable.

Hope you will consider to do something about this, and btw. great job on your first major (and it looks like successful) release!