Arcade game machines, especially those from the golden age of gaming, relied on CRT monitors and specialized hardware to handle dynamic resolution scaling. Unlike modern displays with fixed resolutions, CRT monitors could adjust to varying signal timings, allowing arcade games to switch resolutions seamlessly.

Many classic arcade games used custom video hardware to generate pixel-perfect graphics, often scaling sprites and backgrounds dynamically to fit the screen. Techniques like line doubling and interlacing were employed to maintain smooth gameplay while adapting to different display modes.

Additionally, some arcade PCBs included scaler chips to handle resolution changes on the fly, ensuring compatibility with different cabinet configurations. This flexibility was crucial for preserving the intended visual quality of pixel art while accommodating hardware limitations.

Today, emulators and modern displays attempt to replicate this behavior using techniques like integer scaling and scanline simulation to maintain the authentic look of classic arcade games.