Minecraft wiki entry for Heads-up_display, associated text: The crosshair is a small cross in the middle of the screen. It shows the aim point of the tool or item being held. The crosshair inverts the colors of the area it is upon, which can result in a nearly invisible crosshair if the area is a medium gray. The crosshair is not shown if the player is playing on a mobile device and has turned off Split Controls.