A Texas man has been charged with a hate crime for attacking a 79-year-old black man in what prosecutors say is an example of the "knockout" game.

Conrad Alvin Barrett, 27, was charged with one count of violating the Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act for attacking "because of the man's race and color," the Justice Department said Thursday in a complaint obtained by CNN.

The attack left the elderly man with a jaw fractured in two places, which he was hospitalized for.

The "knockout" game has been around and known by other names since 1992, the Justice Department complaint said, according to CNN.  The game involves someone who tries to knockout an unsuspecting person with a single strike, and is usually recorded, the Los Angeles Times reported. 

Barnett allegedly recorded the Nov. 24 attack on his cell phone and showed it to others, CNN reported. Barnett reportedly said in the video: "the plan is to see if I were to hit a black person, would this be nationally televised?" CNN reported.

According to the Justice Department complaint, Barnett proceeded to "hit the man with such force that the man immediately fell to the ground. Barnett then laughed and said 'knockout,' as he ran to his vehicle and fled," CNN reported.

"The complaint alleges Barnett made several videos, one in which he identifies himself and another in which he makes a racial slur," CNN reported. "In addition, Barnet had allegedly been working up the 'courage' to play the knockout game' for approximately a week."

George Parnham, Barnett's attorney, told CNN he's not had a many chances to discuss the specifics of the case, but "mental health issues definitely played a part in anything that occurred," and that his client, who is bipolar, "is very sorry for this person."

There has been a recent increase in reported cases of "knockout" games.

New York police arrested and charged 28-year-old Amrit Marajh in November with a hate crime in the alleged "knockout" attack of a white Jewish man, CNN reported.