SimAnt was a game released by Maxis, makers of other 'Sim' products such as SimCity and The Sims.
In the game, the player plays the role of an ant in a colony of black ants in the garden of a suburban home. The player can change which ant they are, and the ant controlled by them can order the other ants (by ordering a certain number to follow it, for instance). The player must battle against the red ants. The ultimate aim of the game is to spread throughout the garden, into the house, and finally to drive the human beings out of the house. In this respect, it differed from other 'Sim' games, which largely had no "win" or "lose" situation.
This game never achieved much popularity, although it was re-released by Maxis as part of the SimClassics suite.