That's an incorrect definition of a 'simulator' when compared to an emulator: "Basically what happened is that people created their own implementation (clones)

That's an incorrect definition of a 'simulator' when compared to an emulator: "Basically what happened is that people created their own implementation (clones) of the game Pong. In this case they simulated the looks and game behavior of Pong." The term "instruction set simulator" has a long tradition especially in the academic circles. Emulation is the act of fooling something (software) to think that something actually exists (processor executing an instruction set). Emulation can be achieved by simulation (that is, looking at the structure and operation of the thing being emulated and replicating that to a necessary level of detail by the process of simulation) or by other means (e.g. translation). An emulator therefore can be a simulator. But it doesn't necessarily have to be.