http://www.youtube.com/watch?v=UinNTX1SGH0
http://www.youtube.com/watch?v=7phMPdwXgp8
http://www.youtube.com/watch?v=Bb0UI0KAcQc
https://skatgame.net/mburo/orts/orts.html
Simple RTS with Python and PyGame: http://www.youtube.com/watch?v=_PfZovDNLZU
http://pygame.seul.org/projects/22/