Ball Fight

Alex entered another room on the 12th floor. 

He walked in to find a simple setup. 3 balls of light hung high in the air with words floating above them.

Alex found himself unable to go any further due to a barrier that surrounded the center area and he could only move around the barrier. 

The 10 people that entered with him walked around as they read the simple words. 

"Throw these balls at the other people whoever gets hit gets teleported out?" Alex was surprised to read that. He was expecting to grab the ball to leave, but it turned out you had to hit it. "Reflected balls do not count."

Alex looked around, prepared to catch any one of the balls. He waited for a moment and the numbers showed up for a countdown. 

3,2,1. The barrier dropped.

Alex immediately teleported next to the balls and grabbed one of them. He tried to grab another one, but it moved away from him.