This is an earlier version of Flicky, requiring only 64k of memory, indicating a simpler visual presentation compared to its 128k counterpart. The 'System 1' designation signifies an older revision of Sega's arcade hardware. The 315-5051 code is an internal Sega identifier. 'Set 1' suggests there were multiple releases of this specific version. Sega developed and published this version for the arcade.

Flicky (64k Version, System 1, 315-5051, set 1)

Flicky (128k Version, System 2, 315-5051)