Centigrade 37

The Centigrade 37, manufactured by Maquinas Recreativas Sociedad Anonima (Maresa) of Madrid, Spain, is a rare electro-mechanical pinball machine that is a close copy of Gottlieb's 1977 'Centigrade 37.' As one of Maresa's less common single-player releases, it offers a glimpse into the lesser-known world of Spanish pinball manufacturing, likely produced sometime after the original Gottlieb release given import restrictions of the era.

The gameplay on Centigrade 37 is notable for its combination of mechanisms: two flippers, three pop bumpers, standup targets, and a 4-bank drop target requiring precise aiming to activate. What sets this game apart is its mechanical backbox animation - a thermometer that advances when playfield targets are hit, referencing the game's title (37 degrees Centigrade, or 98.6 Fahrenheit, is normal human body temperature).

Additional gameplay elements include two parallel lanes of serial rollovers on the right side of the playfield and dual inlanes with an open-elbow design that lets the ball pass between inlane and outlane. Whether the Spanish version was a licensed copy or an unlicensed reproduction of the Gottlieb original is unknown, adding to the intrigue surrounding this rare machine for collectors and enthusiasts.