Hold the Ctrl key while scrolling up or down using the mouse wheel.Hold the Ctrl key while pressing the - key to zoom out and the + key to zoom in.There are two methods PC users can use to imitate pinching and outward swiping to zoom in and out in games on Bluestacks. If you've ever given up on emulating a particular Android game because you weren't sure how to zoom in or out, you'll be free of that restriction soon enough.