Clone of Transport Tycoon Deluxe OpenTTD is an open source clone of the Microprose game Transport Tycoon Deluxe (TTD). As president of a start-up transportation company in 1950, you have a choice of building rail, road, air and maritime transportation routes to build up your transportation empire. Outsmart your competition by beating them to attractive passenger and commodities routes to become the game's highest-ranking transport company by the year 2050.