how large are arcade in square feet?

Answer 1

Define what your are asking.

Arcade cabinet?
which type of cabinet? Upright, table top, table, sit down, darts, ddr, driving sim, ect....

Arcade building?
such as in a mall, a stand alone, strip mall, or maybe home.....

If your looking for a general sq ft of most upright cabinets would be: 2.5ft x 2.5ft x 6.0ft = 37.5sqft