Markiplier and Rosanna Pansino play a game called the "Wet Head Challenge Ultimate Edition". They take turns playing rock-paper-scissors, and the winner gets to wear a helmet that may or may not release "battery acid" (water) on their head. The challenge is to pull pins on the helmet, with each pull potentially releasing the liquid. The game is played to 15 points, with Markiplier ultimately emerging as the winner with a score of 15-5. As the winner, Markiplier earns a diamond play button.
Here are the key facts extracted from the text:
1. Markiplier is joined by Rosanna Pansino in a video.
2. They are playing the "Wet Head Challenge Ultimate Edition".
3. The challenge involves wearing a special hat and playing a game of rock-paper-scissors to determine who will pull a pin, releasing water or battery acid on the loser's head.
4. The goal is to reach 15 points.
5. Rosanna is playing to win, and Markiplier is playing to lose.
6. They take turns playing rock-paper-scissors and pulling pins to release water or battery acid.
7. Markiplier is wearing a special helmet to protect himself from the water or battery acid.
8. The challenge is played in multiple rounds, with each round involving a game of rock-paper-scissors and a pin pull.
9. Markiplier wins the challenge with a score of 14 to 5.
10. The winner of the challenge receives a diamond play button.
11. Markiplier and Rosanna had previously done a similar challenge on her channel.