HUD

This image is taken from a game called Hawken. And this particular image shows off one of the main features of the game and that is the HUD, or Heads Up Display.

The HUD shows important information on the players screen so that they're aware and can keep track of important things. Such as the number of ammunition you have, a map to show you were you are, a targeting display to show where you're aiming, the time limit, the amount of XP you have and the current rank you have.