This article may be expanded with text translated from the corresponding article in English. Click [expand] for important translation instructions. Machine translation like DeepL or Google Translate is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the Simple English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary Content in this edit is translated from the existing English Wikipedia article at [[:en:]]; see its history for attribution. You should also add the template {{Translated page}} to the talk page. For more guidance, see Wikipedia:Translation.

OpenTTD is an open source business simulation game, based upon the popular Microprose game "Transport Tycoon Deluxe", written by Chris Sawyer.^[5] which players try to earn money by transporting passengers, minerals and goods via road, rail, water and air.

Starting from 1st April 2021, it is available on Steam, a video game store and digital distribution platform.^[6][7]

Many features were inspired by TTDPatch while others are original.^[5]

The first Transport Tycoon game was released in 1994. It was developed by Chris Sawyer and released by MicroProse. It was very popular at that time. After the release of Transport Tycoon Deluxe (TTD) in 1995, the game was greatly improved.

Around 1996 to 1997, Josef Drexler started a project called TTDPatch. It was able to support NewGRF (package) files, two company colours, and trams. It fixes some problems with the game and also adds a lot of new features to it. The TTDPatch project has lasted for many years and has changed the game obviously.

TTDPatch's way of changing the game, making people hard to add new features to the game. In 2003, Ludde contacted Owen Rudge, owner of TT-Forums, and explained he was going to reverse engineer the game and switch the game to C (programming language). A year later, Ludde presented Owen Rudge with the result. Response was positive, and other developers joined Ludde in the project.^[9]

1. ↑ orudge (2004-03-06). "I proudly present to you OpenTTD!". Transport Tycoon Forums. Retrieved 2021-05-05.
2. ↑ https://github.com/OpenTTD/OpenTTD/releases
3. ↑ https://wiki.openttd.org/en/Manual/
4. ↑ https://github.com/OpenTTD/OpenTTD/blob/master/README.md#13-supported-platforms
5. ↑ ^{5.0 5.1} "OpenTTD | About". www.openttd.org. Retrieved 2025-06-04.
6. ↑ "OpenTTD | News | OpenTTD 1.11.0". www.openttd.org. Retrieved 2025-06-04.
7. ↑ Jonathan Bolding (2021-02-07). "Transport management classic OpenTTD is coming to Steam". PC Gamer. Retrieved 2025-06-04.
8. ↑ "OpenTTD | Manual". wiki.openttd.org. Retrieved 2025-06-04.
9. ↑ "I proudly present to you OpenTTD! - Transport Tycoon Forums". www.tt-forums.net. Retrieved 2025-06-04.

OpenTTD official website