- Reworked order system (conditional orders, have both non-stop and via instead of one of the two)
- Ability to have many more engines
- Path based signals
- AI framework giving everyone the ability to write their own AI
- Downloading of AIs and graphics from a central server
- Non-water map edges
- Initial support for right-to-left languages like Arabic and Hebrew
- Increase or removal of several limits: window size, number of windows, network clients (now 255), companies (now 15)
- Six new languages (Arabic, Hebrew, Indonesian, Latvian, Luxembourgish, Welsh)
OpenTTD is licensed under the GNU General Public License version 2.0. For more information, see the file COPYING included with every release and source download of the game.