What the Pixel - How to play

About What the Pixel!, from BoardGameGeek:

Welcome to the only board game that asks you to express complex ideas using chunky pixels, shaky hands, and way too much confidence! What the Pixel!! is a party game where you'll use a screen to draw things for other players to guess. All clarity disappears as everything boils down to ridiculously limited little squares. All drawings stop being art and instead level down to pure instinct, chaos and laughter! Enjoy abstraction, frustration and glory in 8-bits or less! -description from the publisher