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.

Changes:

Waypoint area is now limited to the max station spread while dragging. Static grfs do not count anymore towards the max active grfs. Rearranged GUI for the autoreplace feature. Realistic acceleration is now enabled by default for trains and road vehicles for new installations. Titlebars for all game dialogs can be disabled to increase usable screen space, active for new installations. Fixed loading savegame from network. Fixed settings cleared at random. Toned down window closing area.