Tunnel

The 1935 Bally Tunnel (model 20) is an electro-mechanical (EM) machine from Bally Manufacturing Corporation's early years. Like other pinball machines of the mid-1930s, it predates modern features such as flippers, which were not introduced to pinball until 1947.

Its name suggests gameplay may have involved guiding the ball through a tunnel feature, though specific rules and design details are not well documented. As with other Bally EM machines from this period, it likely relied on solenoids and relays to register scoring or payout activity.

Detailed information about the Tunnel's rarity, survival rate, and artwork has not been documented, but as an early Bally EM machine from 1935 it represents a piece of the company's formative pinball history.