The wooden horse is played by two people. What's the game opposite, one up and one down?

In this game, there is a long-term balance. Two people are sitting at both ends of the seesaw, one is sitting on the seesaw and the other is sitting under the seesaw. Two people should balance the seesaw by coordinating their own centers of gravity. The goal is to keep the seesaw balanced, so that both people can stay in the air for a while, or lift each other higher. This game tests the participants' sense of balance and cooperation, and also increases the interactivity and interest.