Sega System 18

The following is a list of arcade system boards released by Sega. For games running on these system boards, see List of Sega arcade games.

Sega released the Sega VIC Dual arcade system board in 1977 as one of the first systems to use the Zilog Z80 microprocessor. Some of the games on the system include Depthcharge (1977), Frogs (1978), Heiankyo Alien (1979), Head On (1979), Carnival (1980), and Samurai (1980).

Sega Z80 is an arcade system board that is named after the Zilog Z80 processor it uses as its main CPU. It released in 1980, with games such as Moon Cresta, using a modified version of the Namco Galaxian system board. In 1981, Jump Bug added parallax scrolling and replaced the sound chip. In 1982, Super Locomotive replaced the Namco Galaxian hardware with more advanced custom Sega hardware, including sound and graphics chips that would later be used in the System 1/2/16 and Sega Space Harrier boards.

Jump Bug added the following upgrades in 1981:

Super Locomotive included the following upgrades/modifications in 1982:

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