If you’ve ever played Transport Tycoon Deluxe, and enjoyed it, OpenTTD is for you.
OpenTTD is an open-source clone of Transport Tycoon Deluxe, a popular Microprose game. It attempts to mimic the gameplay (and uses the same graphics!) while adding new features.
Many of the features were inspired by TTDPatch.
You will need the original graphics for TTD, which you can download here.