One example of computer simulation is the complex computer modeling of the movement of celestial objects that scientists use to discover how the moon may have formed. Another example is the Sims line of computer simulation games.

According to ScienceDaily, a computer simulation is a computer program that recreates an abstract, real-world system. Computer simulations are used in science to explore concepts that are difficult or impossible to observe in the real world. They are also used in social sciences, such as economics and psychology, to model systems. Most computer simulations are based on mathematical formulas that describe systems. Computer simulations are also popular for entertainment purposes, modeling people, families and communities.