Palette Test By Loopy (PD) ROM Download for Nintendo (NES) on Emulator Games. Play Palette Test By Loopy (PD) game that is available in the United States of America (USA) version only on this website. Palette Test By Loopy (PD) is a Nintendo emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as NES Test Cart (Official Nintendo), Kirby's Adventure and Game Genie (PD) as shown below. Palette Test By Loopy (PD) works on all your devices in high quality.