The system requirements for OpenTTD can be highly variable depending on several factors. These factors include map size, number of vehicles, and number of NewGRFs. Minimum recommend system specifications have been outlined below based on experience. These specifications won't allow for all the bells and whistles, but they will let the game run and be playable to some extent. Using a modern PC will allow for the best game play experience.
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All Operating Systems
Any installation of OpenTTD needs a few files in order to run. These files can be obtained from either the DOS or Windows version of the original Transport Tycoon Deluxe (TTD). Alternatively a set of open source replacements are available for free (see OpenGFX, OpenSFX and OpenMSX).
Note: the original TTD files are still protected by copyright, however if you wish to use them you can find copies of TTD for sale in bargain bins and on eBay.
Generic hardware specifications include:
- 50 MB free hard disk space (not including the required space for extra files, such as savegames, downloaded extra content and screenshots. 256 MB recommended)
- 8-bit VGA color display (640x480x8) or greater
Windows
- Windows Vista, 7, 8, 10, or 11 (32-bit or 64-bit)
- Minimum 233MHz Pentium with MMX equivalent or greater (500MHz+ PIII recommended)
- 256 MB RAM (512+ MB recommended)
Linux
- Minimum 233MHz Pentium with MMX equivalent or greater (366MHz+ PII recommended)
- 256 MB RAM (512+ MB recommended)
- X11 required
- SDL required
Mac OS X
- Mac OS (10.14 or above)
- G3 233MHz (G4 500MHz+ recommended)
- 256 MB RAM (512+ MB recommended)
Other
There are also versions of OpenTTD for other operating systems. The list can be found here.