The original Pac-Man arcade game used a 288x224 pixel display area, utilizing an 8x8 pixel tile grid for its maze.
Since our reference map image is 224 x 248 px we must divide by 8 to get the tiles:
Since our tilemap has 24px tiles we must multiply by 24 to get the new image resolution:
This is exactly a 3x scale (24 / 8 = 3) of the original reference maze image!
In Project Settings > Window > Size
For left, right, up and down
Set Default Clear Color to Black
Set Default Texture Filter to Nearest