My past self, receiving a copy of Transport Tycoon for his 14th birthday, would have his mind blown if he could see the kind of insanely-complex super-stations that are possible in (the open-source successor to) the game 30 years on.
Of course, this kind of thing – multiple simultaneously shared in-and-out routes on a bidirectional station – wasn’t (sensibly) possible before the introduction of path-based signalling in OpenTTD 0.7.0. And modern path-based signals in the game are even smarter.
But still, 14-year-old me had a dream. And nowadays that dream is real.