FlatulentFish All Kinds of Junk

The Emulator - MAME and all of it's incarnations

MAME, or Multiple Arcade Machine Emulator, is the software that makes this whole thing possible. From the MAME website:

A few years ago I designed and built my own arcade cabinet. This story documents my motivations for doing so and the process that I went through in the build process. It has been a fun project - if you have ever truly loved playing the classic arcade games, you might think about building one for yourself.