Pac-Man was first released in Japan for the Famicom in 1984 by Namco. Tengen localized the game for the NES in a licensed release in 1988, then without a Nintendo license a year later. Namco re-released it for the FDS in 1990 as a budget title, and brought it to the US officially in 1993. Each version has minor differences, see The Cutting Room Floor's page on the NES port.