Dance Dance Revolution
Dance Dance Revolution is a rhythm game by Konami which uses 4 square foot panels for gameplay.
In The Groove and StepmaniaX are other games using square panels versus Pump It Up which uses rectangular panels. The basic construction and electronics are the same between all games.
Plans using aluminum extrusions, FSRs, and arcade bars: https://github.com/joshhead/fsr-dance-pad
Plans using a wood base with sheet metal covers, 3D printed parts, and aliexpress sensors: https://www.instructables.com/DIY-Arcade-DDR-Metal-Dance-Pad-With-LED-Under-500/