Does what it says on the tin. It's just like a normal game, but instead of a countdown timer at the top-right corner, there will be a clock counting up that carries thru each of the stages. When you end the game, the times on each of the stages, together with the character you used and powerups you had, is shown as a results screen. This could be made into a cheat, since it works on any mode really. It's basically a stopwatch that replaces the timer. This would be awesome for time counting challenges and speedruns. This would be even merged with the infinite time cheat, making it on 3 options: On, Off and Time Attack.