Listen up folks. The road ahead is going to be long, and after a bit of walking, it might be a boring march. Hence, I have devised a game to make time pass faster. It is a variation of the infamous DootDanger's number game.
All of you choose a number between 2 and 48, secretly. Then, during the march, you can challenge anyone at any time. They cannot refuse the challenge. If their number is higher than yours, but not a multiple, you win, otherwise you lose. If both numbers are equal, both players lose. If there is a winner, he can choose to keep his number or take the loser's. The losers are eliminated. Everything, save the challenging and the results, is of course done secretly, so as to not alert anyone else to one's number.
When we set up camp, the last person that hasn't lost will get double rations. If there is more than one person that hasn't lost, nobody wins anything, so make sure to challenge a lot!