Desktop / no headset: move your mouse to swing the paddle. Move it into the ball to hit it. VR headset (Quest): press Enter VR. Grab with either hand (squeeze or make a fist) to hold the paddle. Move with one stick, turn with the other. Free play: grab the glowing ball at your corner, throw or bounce it, and rally with the CPU. The ball disappears if it hits the ground or sits too long — just grab a new one. No scoring.