Simulation

Noun

1. Something that simulates a system or environment in order to predict actual behaviour.

   "This exercise is a simulation of actual battle conditions."

2. The process of simulating.

   "Despite extensive simulation in the design phase, the aircraft failed to behave as expected."

3. A video game designed to convey a more or less realistic experience, as of a sport or warfare.

   "Some kids in the classroom will be playing simulations after school."

4. Assuming an appearance which is feigned, or not true.
5. The act of falling over in order to be awarded a foul, when no foul has been committed.