When you need to call down the thunder to deal with those pesky biters, launch a rocket with an ion cannon into orbit and show the bugs who's boss.
NEW +3 technologies: Area Fire and Ion Cannon Mk2
Shortcuts must be updated first for the new version I think.
The Icon should be visible. if not u can use the shortcut ( "I" bei default). In the next version I will add an option to enable/disable the button. this will fix your issue hopefully.
