English [en]

Meet the GNU Hackers at  GHM 2017  • August 25–27 •  Register Now!


GNU ACM is a distributed aerial combat simulator that runs on the X Windows System. Players can engage in simultaneous air combat from different computers. Players fly jet aircraft (something close to either an F-16C Falcon or a MiG-29 Fulcrum) equipped with radar, heat seeking missiles and cannon.

GNU ACM is a slighty modified version of the original ACM made by Riley Rainey at WebSimulations.

Downloading ACM

ACM can be found on the main GNU ftp server: http://ftp.gnu.org/gnu/acm/ (via HTTP) and ftp://ftp.gnu.org/gnu/acm/ (via FTP). It can also be found on the GNU mirrors; please use a mirror if possible.


Documentation for ACM is available online, as is documentation for most GNU software. You may also find more information about ACM by running info acm or man acm.

Mailing lists

ACM has two mailing lists: <bug-acm@gnu.org> and <help-acm@gnu.org>.

The main discussion list is <bug-acm@gnu.org>, and is used to discuss most aspects of ACM, including development and enhancement requests, as well as bug reports.

There is a separate list for general user help and discussion, <help-acm@gnu.org>.

Announcements about ACM and most other GNU software are made on <info-gnu@gnu.org>.

To subscribe to these or any GNU mailing lists, please send an empty mail with a Subject: header of just subscribe to the relevant -request list. For example, to subscribe yourself to the GNU announcement list, you would send mail to <info-gnu-request@gnu.org>. Or you can use the mailing list web interface.

Getting involved

Development of ACM, and GNU in general, is a volunteer effort, and you can contribute. For information, please read How to help GNU. If you'd like to get involved, it's a good idea to join the discussion mailing list (see above).

For development sources, bug and patch trackers, and other information, please see the ACM project page at savannah.gnu.org.
ACM is currently being maintained by Sergio Lopez. Please use the mailing lists for contact.


ACM is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.


 [FSF logo] “Our mission is to preserve, protect and promote the freedom to use, study, copy, modify, and redistribute computer software, and to defend the rights of Free Software users.”

The Free Software Foundation is the principal organizational sponsor of the GNU Operating System. Support GNU and the FSF by buying manuals and gear, joining the FSF as an associate member, or making a donation, either directly to the FSF or via Flattr.