The phrase "pixelated mess" means that something, like an image or a video, appears blurry or distorted because the individual dots, called pixels, that make up the image cannot be distinguished clearly. Full definition
Large melee battles turned into an abstract, janky pixelated mess as the Game Boy's hardware struggles to keep up with the action. (hardcoregaming101.net)
I'm talking about real optical zoom, not some half - assed digital enhancement that leaves your long - distance pics looking like a horrible pixelated mess. (tomsguide.com)
The battle system had been dumbed down, the towns that looked so gorgeous on PS2 were now a pixelated mess by comparison, and the GBA's sound equipment did the music no favors. (playstationlifestyle.net)