I will probably inplant that system but at the moment you have to buy each one.
Before i decide that i really have finished i have this too make for the humans -
A Block -
Just like manty of your wall ideas.
A Research Center -
Yup
A Missile Bunker -
You guessed it
Walker Mech -
Yeah i walker mech kinda thing with a strong melee attack but nothing else
Tank V1 -
A machine gun tank
Tank V2 -
A missile tank
If anyone wants anything else just ask.
Im gonna make the radar spin around too.