The Williams Pinball Controller (WPC) is an arcade system board used for several pinball games designed by Williams and Midway (under the Bally name) between 1990 and early-1999. It is the successor to their earlier System 11 hardware (High Speed, Pin*Bot, Black Knight 2000). Funhouse (designed by Pat Lawlor) was the first production game to use the WPC System, although there are prototype Dr. Dude machines that use the WPC System.