Open TTD is a “Free” Development tycoon game.
You generate a world and build yourself up to becoming an industrial tycoon.
As the in game date progresses new technologies are unlocked.
It is OK to play alone, but on a server it is great fun.
There are many mods out for this game, including ones that supply better graphics (this is a 1990’s game).
The word Free is in quotations because the download of said game is meant for those who own a game disc, but have misplaced it. [But I won’t tell no one if you down load it anyway 
]
