Hard Hat

Place your workman on the floor where the center moving scaffold is. Run to the scaffold and your workman will jump from the building to the scaffold. Pick up a pane of glass and move it into place. Complete your building before your opponent does. If your opponent is getting ahead of you, do not fret; run over to his building and knock off his panes!

Programmers at Mattel Electronics came up with a series of casual games meant to be played at parties. The "Party Line" cartridge was shown at the 1984 CES but never produced.