RedactedNarrative: Both pwc's were loaded on their trailer by the time the investigator arrived at the accident scene. Operator of vessel 2 had already been transported by air evac helicopter to parkland hospital in dallas. Operator of vessel 1 stated that they were playing a game where they would run at each other and turn away at the last minute splashing the wake from their pwc onto each other. Operator of vessel 1 apparently misjudged speed and distance and failed to turn in time causing starboard side of vessel 1 to impact starboard side of vessel 2. Both operators were ejected. Operator of vessel 1 received a minor head injury from impact with the steering controls of her pwc and refused treatment. Operator of vessel 2 was struck by vessel 1 causing arm, leg and internal injuries. Operator of vessel 1 as well as other witnesses watching them from the nearby shore stated that the accident occurred approximately 300ft south of the boat ramp and approximately 300ft west of the shore near the west burns run boat ramp. No diagram.