Experiment with wars of attrition, and discuss strategies for mitigation or competitive advantages (e.g., lower spending rates). In groups of 2, students incur increasing expenses and try to outlast the competition to win a large prize - with the potential to end up with a loss as their investment surpasses their wanted prize.
Each student can decide to leave the competition prior to entering it. As they decide to start the competition, they will have a set spending rate per second (e.g., $2M/second) and need to outlast their competitor to gain a $100M prize. The first to quit has only a loss; the other gets the full prize.