Ring the Bell
From Halopedia, the Halo wiki
Ring the Bell was the game that the SPARTAN-II trainees played on their first day of training in order to earn their dinner. The object of the game was to reach the top of a tower, have each member of your team ring the bell and then cross the finish line with your team. Also note that the first time the game was played by the trainees, John-117 got greedy, sped ahead and finished first, therefore slowing down his teammates - Samuel-034 and Kelly-087 - causing all of them to lose and they all had to go without dinner that night.