A North Texas high school student is fighting for his life after playing in late April, a controversial water gun game that is popular among the seniors who are about to graduate.

The game is called "Advanced Assassin". Players have a classmate who needs to spray water guns to "kill" while avoiding "killing" themselves. Participants used one of the few mobile apps to track targets.

While the rules seem harmless, some say it encourages children to fall into danger.

Arlington students’ life support after playing “Senior Assassin”

Isaac Leal, armed with a water gun and chasing classmates through classmates near Arlington, jumped onto the back of the jeep, which began to withdraw from the driveway.

"Everyone has to download the app," explains Isaac Leal's father, Jose Leal. "So, that way, they can tell you where everyone is."

Just minutes after the vehicle left, the 17-year-old stood on the rear bumper with a severe head injury on the ground.

The South Prairie High School baseball star is just weeks away from graduation and is now supporting life in Arlington Medical City.

The video shows the wrong turn happening when the "Advanced Assassin" moment

“Everything was planned, but plans changed overnight,” said Raquel Vazquez, mother of Isaac Leal. “Nothing matters other than saving the child’s life.”

The security camera video shows Isaac Leal standing on the rear bumper of the Jeep and turning a few turns with the tilting on the road, popping him up onto the sidewalk.

"It was actually six rounds, and it ended up being five minutes, so he stuck with it for five minutes in his life," Jose Leal said.

Only the ambulance responded to the scene, which disturbed parents who wanted police to conduct a criminal investigation.

Arlington PD responds after parents complaint

The Arlington Police Department said in a statement to CBS News Texas that the incident was aware of the incident Saturday, May 3, “When his family contacted us, the police responded to the hospital talking to them” and filed a police report.

Statement continues:

“As of the April 20th incident, we learned that EMS responded to the accident scene in response to the accident scene, known as the unconscious. However, the PD was never dispatched and we were not told that Mr Leal’s injury stemmed from us until we talked to our family last weekend until we talked to our family.

The APD transportation department is leading the investigation.

According to the evidence we reviewed, Mr Leal appeared to be hanging on the back of the vehicle at the time of the accident. ”

"I know of an accident, but it wasn't accidental," Vazquez said.

Isaac Leal's family holds vigil, hoping to recover

The family said it was difficult to move Isaac to another hospital.

Medical City Healthcare/Medical City Arlington issues the following statement to CBS News: Texas:

“Our hearts are for any family of people with severe illness.

"We will continue to fight for my son," Vazquez said. "I don't know how to make it clearer."

Isaac Leal's family has been with him since the accident and hopes he will recover. They want to speak out, hoping to free other parents from the pain they have experienced.

Family, School Warning "Advanced Assassin" Game

"People need to realize that games like this are, from childhood, you don't know that something bad will happen," Jose Leal said.

"Advanced Assassin" game has become Informal tradition Among students Across the country.

Most of the controversy revolves around the use water gun,already Misconceived as real gun. It prompted the principal of the South Prairie Heights to warn the senior class:

“Students who engage in this activity at or around the school may face disciplinary measures, including loss of senior privileges.”

If students playing games on campus, the principal of nearby Timberview High School is threatening a three-day pause.

Although his baseball teammate “playing for Isaac,” a community that revolves around a ruined family, the promising young pitcher’s photos of scholarship quotes, now sticking to it, may convey the strongest message about safe celebrating seniors.

"You never think it will hit at home," Vazquez said.