Unvanquished is an open-source FPS game featuring team-based strategy and RTS elements, pitting humans against aliens in a futuristic setting.
https://forums.unvanquished.net/
Steps to error...
Download Unvanquished Installer_0.8.0.dmg
Install from DMG
-->
Click "okay".
--> The installer is not being blocked by any firewalls.
Run game, find server, autoDL required files, load map
-->
SADFACE
My OS:
Try running the installer again. Sometimes you get a bad SF mirror.
What server did you go to? That could matter as well. I'm not sure if aussie assault has been updated yet, last time i checked there was farting grass and leaf-like tyrants.