Exactly how stingy the time limit is varies Turn-based games will usually measure time by the number of 'rounds' or 'turns', and even real-time games will generally pause the clock when the player is busy accessing their menu screens (instead of playing the actual level). Timed gameplay sequences generally show their countdown onscreen, allowing the player to know their Exact Time to Failure. This can be particularly jarring, since most gamers are used to being able to Take Their Time, and (aside from the occasional Time Bomb and/or Collapsing Lair) the reason why a given level should even need a time limit isn't always apparent. Quite simply, the player is given a finite amount of time to complete a goal, with the penalty for running out of time being Game Over or the loss of one of their Video-Game Lives.