Previously I've built two arcades; a standup, years ago, and a cocktail more recently. Both ran MAME, a multiple arcade machine emulator that's freely available, and a host of old arcade ROMs, which aren't. This time, in the grand tradition of, well, what I do, I'm stealing ideas from a much better build. Using MDF, I've so far put together a frame and am just finishing up the front/top/back pieces, including two access doors (for the monitor and the CPU and subwoofer) and the control panel. I picked up a newish CPU and used 5:4 19" monitor off craigslist for a reasonable amount. I need to order the controls, but otherwise I have just about everything to finish up the cabinet. It's still a long process; after the frame is put together, I need to sand, fill, and sand some more before I even start to prime, paint and finish it. Oh, and before I play the living bejesus out of it in my basement.