For a gaming channel thumbnail, especially for a game like "Supermarket Simulato

For a gaming channel thumbnail, especially for a game like "Supermarket Simulator," you'll want to use an aspect ratio of 16:9. This is the standard ratio for YouTube thumbnails and works well for visual platforms. The recommended dimensions are 1280x720 pixels to ensure good quality and visibility. Make sure the thumbnail is eye-catching, with clear, bold text and vibrant images related to the game to attract viewers.