Thanks for the version 3.0 update, and the Linux version!
On Linux, the game refuses to run because of some missing "executable" permissions; this is easily fixed:
cd AWCA-3.0-all/AWCA-3.0-all/ # strange nested folder ;-)
chmod +x AWCA.sh lib/linux-x86_64/AWCA lib/linux-i686/AWCA
(I guess the zipfile was created on a Windows box, which has no notion of "executable" mode bits...)