I believe i played this Pc game Rts around 2004-2006,it is similar to starcraft.
It had 2 or 3 races if i'm right,one was some humanoid-aliens,other was some robots.
I remember that the robots had a special ability of their resource colectors that they wouldn't have to go back to town center to return the resources,they were using their hands as pipes to go underground and come to surface near town center to transfer the resources.
I think minerals was the main resources.
I even have a pic i took with my cellphone at that time - the main menu of the game,similar to starcraft main menu.