Command and Conquer Renegade
There're some player controlled emplacements, but without automatic defense the base is easily vulnerable. Snipers are cheap (0$ and 500$ ), beacons are expensive (2000$ ), flying units are availble. _______________________ Map name-C&C_PipeF
Simple map, there is two ways to get in the enemy base. Go to the a big tunnel, where all the tanks fighting or fly over the wall and do some damege unnoticed. It would be a good map, without the fly-in-blow-up-somethin method.