What is "openttd"

OpenTTD is a business simulation game in which players try to earn money via transporting passengers and freight by road, rail, water and air. It is an open source remake and expansion of the 1995 Chris Sawyer video game Transport Tycoon Deluxe.

OpenTTD duplicates most features of Transport Tycoon Deluxe and has many additions, including a range of map sizes, support for many languages, custom (user-made) artificial intelligence (AI), downloadable customisations, ports for several widely used operating systems, and a more user-friendly interface. OpenTTD also supports local area network (LAN) and Internet multiplayer, co-operative and competitive, for up to 255 players.

OpenTTD is free and open-source software licensed under the GNU General Public License version 2.0 and is under ongoing development. According to a study of the 61,154 open source projects on SourceForge in the period between 1999–2005, OpenTTD ranked 8th most active open source project to receive patches and contributions. After 2005, development moved to their own server.