The program uses the command line, so it doesn't have a graphical interface that we can use to navigate through the systems, or ROMs. In some cases, there are several versions of the same system, for example, we can emulate the Japanese version of Commodore 64 system or in the NTSC version. Here is a small list of the most well-known emulated systems: This software is capable of emulating more than 700 different systems as the sum of consoles and computers. MESS emulates multiple game consoles and computers, and because MESS runs on Windows, Linux, and Mac, we will be able to run the software developed for old systems in any PC.