16 pixels by 16 pixels is a common resolution for assets matching a low-res pixel art aesthetic. Although the assets may not be specifically 16x16, they are designed to work in a graphical setting where objects are around that size.
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For that old school look and feel.
Explore games with Gamepad (any) support tagged 16x16 and Retro on itch.io · Upload your games with Gamepad (any) support to itch.io to have them show up here.
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