ELI5: Explain Like I'm 5

Centipede game

The centipede game is a game where you and one other person take turns moving an imaginary centipede along a line. The centipede starts at one end of the line, and you take turns moving it one space closer to the other end. The other person then takes their turn and does the same thing.

The goal of the game is to be the first person to reach the other end of the line with the centipede. However, there’s a catch: both you and the other person have the option to stop the centipede whenever you want and claim a reward.

The reward for stopping the centipede is that you get to keep half of the remaining steps left until the end. So, let's say the centipede is two steps away from the end, and you decide to stop it. The other person will get to move the centipede one space closer to the end, but then you get to claim the reward of one step, which is half of the remaining distance.

But there’s a twist to this game - if the other person knows that you will stop the centipede if they let it get too close to the end, they may decide to keep moving it instead of stopping it. This is because if they keep moving the centipede, they have a chance of getting a bigger reward, because there are more steps left until the end.

This creates a psychological and strategic game, where both players must think about what the other person might do and try to predict when the other person will stop. It’s a bit like a game of chicken, where each player is trying to outdo the other by risking going too far before stopping.

In summary, the centipede game is a game of psychology and strategy, where two people take turns moving an imaginary centipede along a line towards the end. The goal is to be the first person to reach the end, but both players can choose to stop the centipede at any point, and claim a reward of half of the remaining distance. The game gets tricky when both players try to predict what the other person will do, and they risk going too far before stopping.