Old PC game fanatics will probably have heard of Tom Sawyer's (The same one who made RollerCoaster Tycoon) Transport Tycoon. Well, a team has completely remade the game and it's now free. One of the best things, which you guys will probably like is the add-on making. Because this game is also, similar to Mari0, has pixel graphics. So that means some of our best tileset makers might have some fun with making add-ons.
Link to download the game:
https://www.openttd.org/en/
Post your towns, networks of transportation or funny screenshots here! It doesn't matter, it just has to be OpenTTD-related.