OpenGFX Readme

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OpenGFX is a set of base graphics for OpenTTD and is the result of the 8bpp Graphics Replacement Project. OpenGFX provides an open source replacement for the original TTD graphic files. Together with OpenSFX and OpenMSX, OpenGFX allows to play TTD without the need for the original TTD cd.

The latest version of the OpenGFX readme is available at this location: Below is a reprint of version 0.4.5 of the readme (dated September 25th, 2012).

OpenGFX Readme - 8bpp Graphics Base Set for OpenTTD

Current Version: OpenGFX 0.4.5

1 About OpenGFX
2 Downloading OpenGFX
3 Installing OpenGFX
3.1 Installation or update via Online Content service
3.2 Manual installation
4 Reporting bugs and Contributing
5 Building of OpenGFX
    5.1 Notes for package maintainers
    5.2 Note on the xcf and psd files
6 License
    6.1 Obtaining the source
7 Credits

1 About OpenGFX

OpenGFX is an open source graphics base set designed to be used by OpenTTD.

OpenGFX provides a set of free and open source base graphics, and aims to
ensure the best possible out-of-the-box experience with OpenTTD.

The project's home is

OpenGFX provides you with...
* all graphics you need to enjoy OpenTTD
* uniquely drawn rail vehicles for every climate
* completely snow-aware rivers
* different river and sea water
* snow-aware buoys

2 Downloading OpenGFX

OpenGFX is available from a few locations. This readme will only cover the
official download locations.

We cannot support third party download locations and we cannot refund your money
if you have paid money for OpenGFX.

- If you're new to OpenTTD, the easiest way is to use the installer (Windows) or
  your package manager (Linux) and install OpenTTD and OpenGFX and also OpenSFX.
- If you're new to OpenTTD, cannot use an installer and don't have access to
  the original TTD files, you'll have to follow the manual installation procedure.
  This is really not as difficult as it may sound, so don't worry too much about
- If you already have OpenTTD up and running using the original TTD base
  graphics, installing OpenGFX using the Online Content Service is the easy way to
  obtain OpenGFX.

If you want to check the integrity of your grf or check whether your
self-compiled grf is the same as it should be, have a look at 

3 Installing OpenGFX

3.1 Installation or update via Online Content service

This method uses the online content service (BaNaNaS) to download OpenGFX. In
order to use this, you need a working OpenTTD and again at least OpenTTD version
0.7.0 or a recent nightly.

1. Start OpenTTD and on the main menu click the Check Online Content button. A
   new window will pop up. If OpenTTD doesn't start, follow the manual installation
2. Find the OpenGFX entry from the list at the left. You can use the search box
   in the upper right corner of the window.
3. Click the little square in front of the OpenGFX entry in order to mark it for
4. Click the Download button in the bottom right corner. After download, close
   the open windows.
5. In the main menu of the game, click the Game Options button. The Game
   Options dialog will appear.
6. Select OpenGFX from the drop-down list below Base graphics set if that's
   not selected already (bottom left of window). Close the window using the × in
   the upper left corner.

3.2 Manual installation

1. First, make sure that you downloaded and installed at least OpenTTD version
0.7.0 or later.

2. Next, download the latest OpenGFX package. There are a few sources:
- the development homepage
- official mirror:
- Look for "OpenGFX" on one of the OpenTTD binaries servers, it is found in the
"bananas" section:<version>.tar.gz

3. Unpack the zip file into the OpenTTD's baseset directory (see section 4.2 of the
OpenTTD readme for a detailed treatise on all baseset dirs OpenTTD recognizes).
There's no need to unpack the tar, so just leave it as it is.
- An OpenTTD folder in your user account's home directory:
    Windows: C:\My Documents\OpenTTD\baseset (95, 98, ME)
             C:\Documents and Settings\<username>\My Documents\OpenTTD\baseset (2000, XP)
             C:\Users\<username>\Documents\OpenTTD\baseset (Vista, 7)
    Mac OSX: ~/Documents/OpenTTD/baseset
    Linux:   ~/.openttd/baseset
- The baseset dir in OpenTTD installation directory.

In OpenTTD versions older than OpenTTD 1.2.0 (r23225) you need to replace 'baseset'
in the quoted paths by 'data'.

4. Run OpenTTD. Chances are that you'll miss a sound set. Get one (we recommend
our sister project OpenSFX) and install it into the same directory as OpenGFX.

5. In the main menu of the game, click the Game Options button. The Game
Options dialog will appear.

6. Select OpenGFX from the drop-down list below Base graphics set if that's
not selected already (bottom left of window). Close the window using the × in
the upper left corner.
- If you did not install the original TTD base graphics during the installation
  of OpenTTD, you can skip this step.
- If you installed the original TTD base graphics as well, this is where you can
  switch base graphic sets.

Now that wasn't so hard, was it? Anyway, if you're having trouble getting
OpenGFX to work, please file a detailed report on what you did, what error
messages you got and where you got stuck in the OpenGFX release topic
at TT-Forums: or
(preferably) at our bug tracker at

4 Reporting bugs and contributing

If you spot any graphical bugs or glitches in the available graphics, please let
us know preferrably via our bug tracker
or via the OpenGFX release topic at
Please make sure that you're using the latest available version before reporting
a bug. You can check the issue tracker to see if the bug you've found is already
reported (or fixed!).

If you have made yourself improvements to either graphics or the source code
itself, please also share that with us either via the bug tracker or the
development discussion thread

5 Building OpenGFX

The OpenGFX source is available in a Mercurial repository or as gzip'ed tarball.
You can do an anonymous checkout from ,
e.g. using
    hg clone
or obtain the tarball from

Prerequisites to building OpenGFX:
- gcc (the pre-processor is needed)
- md5sum (linux, mingw) or md5 (mac)
- NML 0.2.x (not the development branch)
  (available from )
- some gnu utils: make, cat, sed, awk
  and you might additionally want a text editor of your choice and a graphics
  programme suitable to handle palettes.
- Mercurial (only when not building from a tarball, available from

Optionally, required to re-generated all graphics files from their layered source
  files after executing 'maintainer-clean':
- GIMP 2.4 or later

On Windows: we advise you get a MinGW development environment, NML and Mercurial
from the sources mentioned above). For more detailed instructions see our guide at
and the very extensive and detailed installation instructions on the MinGW wiki at

On Linux: your system should already have most tools, you'll probably only need
NML and Mercurial available from the source mentioned above. For installation
instructions concerning Mercurial refer to the manual of your distribution.

On Mac: Install the developers tools and get NML from the source mentioned above.
Mercurial is easiest installed via MacPorts:
    sudo port install mercurial
On OSX GIMP is not found in the path, if you installed the app package as supplied
from the GIMP's project page. You can add that to your search path if you link
the binary:
    sudo ln /Applications/ /usr/local/bin/gimp
It requires the X-enironment to be running.

The use of Mercurial is strongly encouraged as only that allows to keep track of

Once all tools are installed, get a checkout of the repository and you can build
OpenGFX using make. The following targets are available:
- all: builds all grfs and the obg file
- install: build and then copy OpenGFX in your OpenTTD baseset directory. Use
  Makefile.local to specify a different path.
- clean: cleans all generated files
- mrproper: also cleans generated directories
- maintainer-clean: clean also the graphics files can be re-generated via GIMP
- bundle_src: create a source tarball
- bundle_zip: create a zip archive of OpenGFX
- bundle_bz2: create a bzip2 archive of OpenGFX
- bundle_tar: create a tar archive of OpenGFX
- check: checks the md5 sums of the built grf and obg files against those of
  the official release versions

Given the usual case that you modify something within OpenGFX and want to test
that, a simple 'make install' should suffice and you can immediately test the
changes ingame, if you selected the nightly version of OpenGFX. Given default
paths, a 'make install' will overwrite a previous nightly version of OpenGFX.
Mind to re-start OpenTTD as it needs to re-read the grf files.

5.1 Notes for package maintainers:
- Checking for build success: The source releases contain an additional file
  opengfx-<version>.md5 which indicates the md5 sums of the generated files as
  released in the binary release. You can check your build by running
  'make check'. Mind that you'll overwrite the file with the original md5 sums,
  if you call 'make bundle_src' or 'make md5'.
- The source release also contains a Makefile.local and a slightly appended
  Makefile.def, both supplying additional variable definitions which otherwise
  would be determined by accessing repository properties.
- The variable which supplies the install path changed for the sake of
  consistency and better readability to INSTALL_DIR. The old INSTALLDIR still
  works but is deprecated.

5.2 Note on the xcf and psd files
The repository contains a few xcf2png files which indicate which png files can
be generated from the source xcf or psd files. This will only be used, if GIMP
is found. Calling 'maintainer-clean' will delete the png files which can be
re-generated from a xcf or psd file.

6 License

OpenGFX Graphics Base Set for OpenTTD
Copyright (C) 2007-2011 by the OpenGFX team (see credits section below)

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 as published by the Free
Software Foundation.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the

Free Software Foundation, Inc.
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

7 Credits

OpenGFX is created by the following people (in reverse alphabetical order):

* Zuu (Leif Linse)
* Zephyris (Richard Wheeler)
* Varivar
* uzurpator
* Spaz O Mataz
* Soeb (Stanislaw Gackowski)
* Snail (Jacopo Coletto)
* skidd13 (Benedikt Brüggemeier)
* Rubidium (Remko Bijker)
* Roujin (Manuel Wolf)
* Red*Star (David Krebs)
* Raumkraut (Mel Collins)
* Purno (Mark Leppen)
* planetmaker (Ingo von Borstel)
* PikkaBird (David Dallaston)
* PaulC (Paul Charlesworth)
* orudge (Owen Rudge)
* oberhuemer
* northstar2
* Mr. X
* mph (Matthew Haines)
* molace (Zoltán Molnár)
* michi_cc (Michael Lutz)
* mb (Michael Blunck)
* mart3p
* Lawton27 (Jack Lawton)
* LordAzamath (Johannes Madis Aasmäe)
* lead@inbox (Serge Saphronov)
* Jonha
* Irwe (Alexander Irwe)
* Gen.Sniper
* frosch (Christoph Elsenhans)
* Froix
* FooBar (Jasper Vries)
* erikjanp
* EdorFaus (Frode Austvik)
* drginaldee
* DJ Nekkid (Thomas Mjelva)
* DanMacK (Dan MacKellar)
* buttercup
* bubersson (Petr Mikota)
* Born Acorn (Chris Jones)
* Bilbo
* BenK
* Ben_Robbins_ (Ben Robbins)
* athanasios (Athanasios Arthur Palaiologos)
* andythenorth (Andrew Parkhouse)
* AndersI (Anders Isaksson)
* Ammler (Marcel Gmür)
* 2006TTD (Anthony Lam)

* The monospaced characters are generated from the font Liberation Mono: created by Pravin Satpute and
    Caius Chance, released under GPL v2.

Contact: planetmaker @ or on

A detailed list of who worked on what is available in the file
docs/authoroverview.csv in the source repository.

Thanks go out to the guys at #openttdcoop for providing the source repository
and bug tracking services.

See also

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