Rio

The Rio pinball machine, produced by Game Plan Incorporated in 1978, is a cocktail-table, solid-state electronic pinball machine (Model 110, running Game Plan's MPU-1 board) from the company's early years in the solid-state era. As one of Game Plan's earlier SS designs, it reflects the industry's broader shift from electromechanical to microprocessor-controlled scoring during the late 1970s.

Beyond its cocktail-table cabinet format and Game Plan MPU-1 hardware, little specific detail about Rio's playfield layout, designer, or artwork has been documented. Cocktail-table pinball machines like Rio were built into a low, table-style cabinet meant for face-to-face two-sided play, often placed in bars and lounges rather than the standard upright cabinets more commonly associated with pinball.

Given the scarcity of surviving documentation, enthusiasts largely have to rely on hands-on experience and observation to evaluate Rio's specific gameplay qualities. Its 1978 production date and cocktail-table specialty nonetheless make it an interesting piece of Game Plan's catalog from the formative years of solid-state pinball.