In Space Pirates and Zombies, in the options screen I see keybindings for fire groups 1, 2 and 3. By experimentation, group one and two correspond to the normal left-right mouse button weapons, which seem to be shooters and launchers respectively. The group 3 key doesn't seem to do anything.
What is group 3, and is there a way to configure which weapons belong to it?
Best Answer
According to an answer posted on the SPAZ forums:
This indicates that the third option is shuttles. This is backed up by the Wikipedia article (emphasis mine):
It looks like you may need modules to access this option (which may be why it does nothing for you). The modules I can find are the Suicide Cannon and the Grunt Shuttle