AGS Licensing

If you want to distribute your game commercially, this page attempts to explain the various issues with licensing you may face. It also covers AGS's licence agreement.

The Adventure Game Studio Licence

AGS is an adventure game creation system. As such, it is provided to you in good faith by the author. Chris Jones cannot be held responsible for the contents of any works created with AGS, including but not limited to any which infringe on copyright, are libellous or contain offensive material. Please use AGS responsibly.

If you come across an AGS-made game which infringes on any laws relevant to you, please contact the author of the game. Chris Jones does not have any control over the content of games created with AGS and cannot help you.

THE SOFTWARE ("ADVENTURE GAME STUDIO ENGINE AND TOOLS") IS PROVIDED WITH ABSOLUTELY NO WARRANTY, NOT EVEN THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. USE THIS SOFTWARE AT YOUR OWN RISK. CHRIS JONES IS NOT RESPONSIBLE IF YOUR COMPUTER STARTS BURPING, CATCHES FIRE, GETS A SENSE OF HUMOUR OR ANYTHING ELSE WHICH HAPPENS DUE TO THE USE OF THIS SOFTWARE.

Commercial sale of games

If you wish to make money from anything you create with AGS, which covers both shareware and commercial releases, there are some factors you need to consider.

First of all, the default speech font in AGS is ripped from Space Quest IV: Roger Wilco and the Time Rippers. If you are going to distribute your game commercially, you should change this because it may make Sierra unhappy. The default normal font is however drawn by me and freeware.

AGS itself, as in the compiled version of the code written by me (Chris) is freeware and therefore may be distributed commercially without penalty. However, AGS uses some third-party components which have different licence agreements which you will have to abide by in order to commercially release your game.

In particular the components, with relevant licence agreements, are:

Main graphics and sound sub-systems

Allegro is gift-ware. It was created by a number of people working in cooperation, and is given to you freely as a gift. You may use, modify, redistribute, and generally hack it about in any way you like, and you do not have to give us anything in return. However, if you like this product you are encouraged to thank us by making a return gift to the Allegro community. See the Allegro website for more information.

Anti Aliasing Library

Also under the terms of the Allegro licence, see above.

Graphic Filters

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 That's all there is to it!
                                

MP3 player

Uses the GNU LESSER GENERAL PUBLIC LICENSE,Version 2.1, February 1999. See Hq2x/Hq3x above

However, the use of MP3 in commercial products requires you to get a licence from Fraunhofer and Thomson Multimedia, who own the MP3 decoding patent. At time of writing, this is a flat fee of $2500 per game, but only if more than 5000 copies are sold. For up-to-date information, check the MP3 licensing website. The easiest solution is to get the alternative AGS Engine build without the MP3 decoder from the Download page, and use OGG for your music and sound.

OGG music player

OGG License

Copyright (C) 2002-2008 Xiph.Org Foundation and contributors.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
  • Neither the name of the Xiph.Org Foundation nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Due credit should also be given to Javier Gonzalez, who wrote the AllegroOGG interface that AGS uses.

TTF renderer

The FreeType Project LICENSE
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2000-Feb-08

Copyright 1996-2000 by
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KIND, EITHER  EXPRESS OR IMPLIED,  INCLUDING, BUT NOT  LIMITED TO,
WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR
PURPOSE.  IN NO EVENT WILL ANY OF THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE  FOR ANY DAMAGES CAUSED  BY THE USE OR  THE INABILITY TO
USE, OF THE FREETYPE PROJECT.

2. Redistribution
-----------------

This  license  grants  a  worldwide, royalty-free,  perpetual  and
irrevocable right  and license to use,  execute, perform, compile,
display,  copy,   create  derivative  works   of,  distribute  and
sublicense the  FreeType Project (in  both source and  object code
forms)  and  derivative works  thereof  for  any  purpose; and  to
authorize others  to exercise  some or all  of the  rights granted
herein, subject to the following conditions:

o Redistribution of  source code  must retain this  license file
(`FTL.TXT') unaltered; any  additions, deletions or changes to
the original  files must be clearly  indicated in accompanying
documentation.   The  copyright   notices  of  the  unaltered,
original  files must  be  preserved in  all  copies of  source
files.

o Redistribution in binary form must provide a  disclaimer  that
states  that  the software is based in part of the work of the
FreeType Team,  in  the  distribution  documentation.  We also
encourage you to put an URL to the FreeType web page  in  your
documentation, though this isn't mandatory.

These conditions  apply to any  software derived from or  based on
the FreeType Project,  not just the unmodified files.   If you use
our work, you  must acknowledge us.  However, no  fee need be paid
to us.

3. Advertising
--------------

Neither the  FreeType authors and  contributors nor you  shall use
the name of the  other for commercial, advertising, or promotional
purposes without specific prior written permission.

We suggest,  but do not require, that  you use one or  more of the
following phrases to refer  to this software in your documentation
or advertising  materials: `FreeType Project',  `FreeType Engine',
`FreeType library', or `FreeType Distribution'.

As  you have  not signed  this license,  you are  not  required to
accept  it.   However,  as  the FreeType  Project  is  copyrighted
material, only  this license, or  another one contracted  with the
authors, grants you  the right to use, distribute,  and modify it.
Therefore,  by  using,  distributing,  or modifying  the  FreeType
Project, you indicate that you understand and accept all the terms
of this license.

4. Contacts
-----------

There are two mailing lists related to FreeType:

o freetype@freetype.org

Discusses general use and applications of FreeType, as well as
future and  wanted additions to the  library and distribution.
If  you are looking  for support,  start in  this list  if you
haven't found anything to help you in the documentation.

o devel@freetype.org

Discusses bugs,  as well  as engine internals,  design issues,
specific licenses, porting, etc.

o http://www.freetype.org

Holds the current  FreeType web page, which will  allow you to
download  our  latest  development  version  and  read  online
documentation.

You can also contact us individually at:

David Turner      david.turner@freetype.org
Robert Wilhelm    robert.wilhelm@freetype.org
Werner Lemberg    werner.lemberg@freetype.org

OGG Theora video player

The OGG licence (see AllegroOGG above)

Due credit should also be given to Chris Robinson, who wrote the APEG interface that AGS uses to play Theora video.

MOD/XM/S3M/IT player

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions (For more detail see the licence_dumb.txt in the AGS distribution).

CD-Audio player

You may use, modify, redistribute, and generally hack it about in any way you like, but if you do you should contribute something in exchange. This could be a complimentary copy of a game, an addition or improvement to libcda, a bug report, some money (as long as you can track down and send it to all contributors), or just a copy of your AUTOEXEC.BAT or .bashrc if you don't have anything better.

If you redistribute libcda or make a game using it, it would be nice if you mentioned the contributors somewhere in the credits.

You should mention in your documentation that the above libraries were used (if the relevant part is used by your game) if no further licence terms apply. It would also be nice to include any relevant parts from the Credits section in the AGS Manual in your documentation.

MOST IMPORTANTLY, if you decide to release a commercial game then it is your responsibility to verify that the licences specified above are correct, and to meet any conditions contained therein.

The above licence information is believed to be correct at time of writing. If there are any inaccuracies, please do not hesitate to contact me in order to get them corrected.