OpenTTD is an open source clone of the Microprose game “Transport Tycoon Deluxe”, a popular game originally written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it with new features.

The Dingux port is based upon OpenTTD v1.0.5 and includes OpenGFX.

http://boards.dingoonity.org/dingux-releases/openttd-for-dingoo/