So I took the dive and mounted the war1gus.opk file in Linux as a squashfs image...and from the looks of the contents, the entire wargus/stratagus package - the engine, the assets, etc - are already included in the opk.
Not sure why it crashes when it runs. I turned on logging via the gmenu32 and /var/logs/gmenu2x.log shows:
Stratagus default config file loading ...
Stratagus v2.4.2-git607fe40ef10b856d1c5c81479b4c110de71ac7f6, Copyright (c) 1998
-2015 by The Stratagus Project
written by Lutz Sammer, Fabrice Rossi, Vladi Shabanski, Patrice Fortier,
Jon Gabrielson, Andreas Arens, Nehal Mistry, Jimmy Salmon, Pali Rohar,
cybermind and others.
Compile options ZLIB LINUX X11
Stratagus may be copied only under the terms of the GNU General Public License
which may be found in the Stratagus source kit.
This software is provided as-is. The author(s) can not be held liable for any
damage that might arise from the use of this software.
Use it at your own risk.
...so not too useful.
Editing the gmenu for the game (hover over, Select -> Edit -> Display Console to 'ON') it'll display the console as it loads and just shows the same message and then crashes.