Sevens

Sevens was a whitewood prototype designed by John Trudeau for Premier Technology (marketed under the Gottlieb trade name), but it was never placed into production and the playfield no longer exists. Notably, Sevens was a Flipperless machine -- Trudeau has described it as his tribute to the bingo-style pinball machines he enjoyed in his youth, built around declining-value scoring rather than flipper-based shot-making. By his own account it played almost too much like a bingo, and the project was ultimately killed over the lingering association between bingo-style pinballs and illegal gambling machines.

As a four-player game, Sevens' main notable feature was a left kickback lane. Without flippers, gameplay would have centered on ball placement and timing rather than flipper-driven shot-making, in keeping with its bingo-game inspiration.

Because it was never produced, Sevens survives only as a prototype -- an unusual example of Trudeau experimenting with a flipperless, bingo-inspired design at a time when such machines carried an uneasy association with gambling devices.