The Timer is a recurring mechanic in the Speed Challenge series. It has appeared in all games thus far - except for Sandwich,s Speed Challenge: Speed Kills.
Behavior
After a certain amount of time, the Timer will run out, and the game will end. While a Timer is active, the player must complete the stage before the timer runs out, or else the game will end. Ultra Speed Challenge 2.5+ is the only game in the series so far to have a representation of the Timer.