As with any good project, you need a good plan. My goto for quick planning, as with most, is sketchup. 

TEarly on in the design stage, it was the intent to have a 2 player arcade, but I opted for single player. 

The size of the arcade is largely dictated by the the marquee I ordered. Surprisingly, there's a plethora of neat marquees on eBay. I ordered one that is 8" x 26"

The design above is 26" wide, which will have 2 end panels. 

The lower piece on the marquee is shown long, but will be shortened, as its still in design.