
This Version (13.4-1build3 from July 2023) is heavily outdated; Updates since then made, among others, improvements to the new player experience (Learning the game will still be challenging don't get me wrong). While 14.1 still counts as the "current" Stable version, i recommend going for the 15.0 "Testing" branch anyway, since it's on its 4th Release candidate version and will very soon replace 14.1. Get both Versions on either the OpenTTD website (if you don't use steam), or on steam (if you want automatic updates). Make sure to opt into the Testing/RC beta branch if you use Steam.
It's so pleasing to see an open source version of the game - one even better than the original. Transport Tycoon Deluxe will go down in video game history as one of the greatest and most influential games ever made; it's still so easy to sink hours into, more than 25 years after it was released. Most game developers would sell their firstborn to put out a game this legendary.