A more piecemeal simulation released by Maxis back in 1991. Possibly some inspirations (red ants vs black ants, food represented in green circles/spheres):
Simant lost a lot of its appeal once I worked out I could enter a new zone and queen-rush the enemy with a 50/50 chance of winning, and just send in a new queen if I failed.
For me all the various SimSomething games were more about figuring the rules, limits and possible abuses of the simulation design than the intended actual game.
That "revenge is mine" feeling is one of my favorite parts of RPGs.
"What's the matter, horde of orcs? You beat me twelve times when I was level four, why are you scared of me now? Could it be fireball? Oh I see it could. And what is this little stick I'm carrying? Still a nonmagical quarterstaff? Oh, wait, dropped that when I picked up the Wand of Lightning Bolt."
http://en.wikipedia.org/wiki/SimAnt