The outer shell material is black expanded pvc painted with blacklight sensitive acrylic paint. The UV paint was actually transparent, so there's a layer of white primer underneath. The "frame" is just small segments of 2"x2" anywhere the plastic forms a right angle. The screen is an old CRT monitor behind a sheet of polycarbonate. The monitor bezels and the polycarbonate were masked and painted black. Everything is attached with short drywall screws.
The control board is a hacked up keyboard with SuzoHapp switches attached in place of keys. This and the monitor plugged into a computer running the game. 3 machines ran Packman, 3 machines ran Grid Wars, a clone of Microsoft's Geometry Wars, and 8 machines ran a lightcycle game called Armegatron Advanced. This specific copy allowed for player drop-in/drop-out and multiplayer across multiple computers. We set up two sets of 4 machines, where each set of 4 players could play against each other. Lastly, there were two signature machines. Mine ran Einhänder. Raymond's ran Tou-Hou.