Blocky Pixel Filter

class Example extends Phaser.Scene
{
    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v410');
        this.load.image('sonic', 'assets/sprites/sonic.png');
        this.load.image('phaser-dude', 'assets/sprites/phaser-dude.png');
        this.load.image('shinyball', 'assets/sprites/shinyball.png');
        this.load.image('sky', 'assets/skies/ms3-sky.png');
    }

    create ()
    {
        this.add.image(640, 360, 'sky').setScale(2.5).setScrollFactor(0);

        const addSprite = (x, y, distance) => {
            const texture = Phaser.Math.RND.pick([
                'sonic',
                'phaser-dude',
                'shinyball'
            ]);
            const sprite = this.add.sprite(x, y, texture);
            sprite
                .setScale(1 / distance)
                .setScrollFactor(1 / distance)
                .setOrigin(0.5, 1);
        };

        for (let x = 0; x < 1280; x += 64)
        {
            addSprite(x, 160, 1);
        }

        for (let x = 0; x < 1280; x += 128)
        {
            addSprite(x, 280, 1/2);
        }

        for (let x = 0; x < 1280; x += 256)
        {
            addSprite(x, 480, 1/4);
        }

        for (let x = 0; x < 1280; x += 512)
        {
            addSprite(x, 840, 1/8);
        }

        this.blockyController = this.cameras.main.filters.external.addBlocky({ size: 4});

        // Toggle the filter on and off
        this.input.on('pointerup', () => {
            this.blockyController.setActive(!this.blockyController.active);
        });
    }

    update (time, delta)
    {
        const camera = this.cameras.main;

        camera.scrollX = Math.sin(time / 4000) * 20;
    }
}

const config = {
    scale: { mode: Phaser.Scale.FIT },
    type: Phaser.AUTO,
    width: 1280,
    height: 720,
    backgroundColor: '#000000',
    parent: 'game-container',
    scene: Example,
    antialias: false
};

let game = new Phaser.Game(config);