Multiple Targets

class Example extends Phaser.Scene {
    constructor() {
        super();
    }

    preload() {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v410');
        this.load.image('block', 'assets/sprites/block.png');
    }

    create() {
        var image1 = this.add.image(50, 100, 'block');
        var image2 = this.add.image(60, 200, 'block');
        var image3 = this.add.image(70, 300, 'block');

        var tween = this.tweens.add({
            targets: [image1, image2, image3],
            x: '+=600',
            y: '+=200',
            duration: 4000,
            ease: 'Power3'
        });

        console.log(tween);
    }
}

const config = {
    scale: { mode: Phaser.Scale.FIT },
    type: Phaser.AUTO,
    width: 800,
    height: 600,
    backgroundColor: '#2d2d2d',
    parent: 'game-container',
    scene: Example
};

const game = new Phaser.Game(config);