ELI5: Explain Like I'm 5

Robotics simulator

A robotics simulator is a type of computer software that creates a virtual environment where a robot (a special kind of machine) can be programmed and tested. This means that the robot can do tasks or move around without needing to be built or put in a real-life environment. This makes it easier to design and perfect a robot before actually building it or testing it out in the real world.