There was a PC game called Knights and Merchants that i enjoyed rather verily... i have only ever seen one other copy so im assuming its relatively obscure. As for 'old', no RTS experience has ever compared to my first go on Shogun: Total War. Those boys know what they're doing. (although saying that, it was rather cool on Total Annihilation when a Commander strolls into a fight with his 'D-Gun' (i think?) firing away and taking out everything.)