Myth II is a real time strategy game designed back in like 1997 by bungie studios, the same makers of the hit games Marathon, Halo, and Halo 2.
To my knowledge:
First game to have online play.
First game to support
color wheel for choosing thousands of colors for your player/team.
First RTS to change
camera angles on the fly.
First game to release map making packages and make some very awesome maps like
ADT, WWII, and such.
I just
got done playing some Myth II. Myth II is the best
RTS game ever!