The game is a simulation of an ant colony. Wright was inspired by E. O. Wilson’s study of ant colonies. The game consists of three modes: a Quick Game, a Full Game, and an Experimental Game. It was released for the IBM PC, Amiga, Macintosh, and Super NES. The Super NES version adds eight scenarios, where the goal in each is to eliminate the enemy red ants in various locales, each with different hazards. In SimAnt, the player plays the role of an ant in a colony of black ants in the back yard of a suburban home.
The ant colony must battle against enemy red ants. The ultimate goal is to spread throughout the garden, into the house, and finally to drive out the red ants and human owners. In this respect, SimAnt differed from other ‘Sim’ games that were open-ended and had no victory conditions. In the Quick Game, the player establishes a black ant colony in a small patch of yard, shown in top-down perspective.
The computer opponent establishes a competing red ant colony in the same patch. Underground ant colonies are depicted in a side view. The player has direct control of a single ant at a time, indicated by a yellow color, and may switch control to a different ant at any time by either double-clicking the desired ant or choosing Exchange from the Yellow Ant menu and clicking on it.
The player’s yellow ant may influence the behavior of other black ants by leaving pheromone trails to destinations such as food and enemy ant colonies and can control the other ants in a limited way (by ordering a certain number to follow it, for instance). The yellow ant can also dig new tunnels underground and expand the network of the black colony. The quick game is won or lost when either the red or black colony in said patch is defeated.