Algodoo

In this series, 15 teams consists of 5 marbles. The 8 leaders (which were in the far left)
on each team will battle it out. The first half of the leaders that make it will
participate in the next round, and the last half that doesn't make it gets
eliminated and the next leader in the team takes their place. That team is
left with 4 marbles. Please do not tell who the winner is.

Once a team has lost all of it's marbles, that team is out. The last remaining
team wins the gold cup! Good luck!