simulator

A simulator is a device or program that mimics real-life situations or activities. You can think of it like an actor who plays a role.

When people talk about simulators, they usually mean computer games or training programs that let you practice and learn without taking risks. For example, pilots use flight simulators to practice landing planes before actually flying one. Students might play video game simulators to get a feel for driving a car in different conditions. Even medical students can use simulators to practice surgeries on fake patients.