The Paintbrush is a good enough replica of Microsoft Paint, I guess, but the amount of tool options is too little! Most Microsoft Paint models have way more tools, for example most have both a brush and a pencil tool, the pencil tool is pretty useless, but the brush tool, which has a variation in brush size to the minimum of one pixel, is really good, especially when making sprites. The Paintbrush would be way better if you could add some more touches such as a proper paintbrush?