Galaxian was released in 1979 and features a smooth scrolling background and non-flickering sprites, all at 60 FPS. It's especially notable because it was the first game to use dedicated tiles + sprites graphics hardware, which would become the standard for arcade and console hardware and the main reason why those games looked different from computer games. The earlier Space Invaders (1978) had the CPU draw to a computer-style frame buffer with minimal hardware acceleration (only a barrel shifter to speed up horizontal movement). This was too slow to update all the aliens at 60 FPS so they would only speed up as the number remaining decreased (which worked out well from a gameplay point of view, but the original reason was a technical limitation).